{"product_id":"double-k-all-in-one-hard-case","title":"Double K - All-in-One Hard Case","description":"\u003ch2\u003eDouble K All-in-One Hard Case\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003ePRE-ORDER NOW! (delivery ~ end. August)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eDouble K All-in-One Hard Case\u003c\/strong\u003e is a protective hard-shell travel case for freedivers who need to transport valuable carbon equipment safely. It is designed for \u003cstrong\u003emonofins, bi-fins, short fins, wetsuits and freediving accessories\u003c\/strong\u003e in one clean, travel-ready case.\u003c\/p\u003e\n\u003cp\u003eIf you travel with a carbon monofin or high-end bifins, a soft bag is often not enough. Carbon blades can be damaged by pressure, impact or rough baggage handling. The All-in-One Hard Case gives your freediving gear a stronger protective shell for flights, training camps, competitions and international freediving travel.\u003c\/p\u003e\n\u003cp\u003eWith external dimensions of approximately \u003cstrong\u003e78 × 26 × 69 cm\u003c\/strong\u003e and a weight of approximately \u003cstrong\u003e6 kg\u003c\/strong\u003e, this case is built for serious freediving equipment — especially large monofins and carbon fins that should not be squeezed into standard luggage.\u003c\/p\u003e\n\u003c!-- IMAGE PLACEMENT:\nUse the main colour overview image in the Shopify product gallery.\n\nRecommended first gallery image:\ndouble-k-all-in-one-hard-case-black-silver-white-colour-overview.jpg\n\nRecommended alt text:\nDouble K All-in-One Hard Case in Black Silver and White\n\nImportant:\nUse the most accurate image available. The case must look wide and rectangular, not like a normal tall suitcase.\nThe three side locks should be visible where possible.\n--\u003e\n\u003ch3\u003eWhy choose the Double K All-in-One Hard Case?\u003c\/h3\u003e\n\u003cp\u003eFreediving equipment is awkward to travel with. Monofins are wide, carbon bifins are fragile, wetsuits take space and smaller accessories easily get lost between bags. This case is designed to solve that problem by keeping your main freediving setup together in one hard-shell travel case.\u003c\/p\u003e\n\u003cp\u003eThe real value is protection. A carbon monofin or premium bifin setup can cost far more than the case itself. If you fly with your equipment, the case is protection against the kind of baggage handling that soft bags are not built to survive.\u003c\/p\u003e\n\u003ch3\u003eMain benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-in-one freediving travel case\u003c\/strong\u003e for monofins, bi-fins, short fins, wetsuits and accessories\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned to fit common large freediving monofins\u003c\/strong\u003e, including competition-style monofin shapes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpact-resistant hard shell structure\u003c\/strong\u003e for better protection than a soft gear bag\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir travel friendly structure\u003c\/strong\u003e for checked luggage and international freediving trips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge internal packing space\u003c\/strong\u003e for a complete freediving setup\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eExternal dimensions: approx. 78 × 26 × 69 cm\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eApprox. weight: 6 kg\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree integrated 3-digit TSA combination locks\u003c\/strong\u003e positioned along the side of the case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheels and carry handle\u003c\/strong\u003e for easier airport and travel movement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal straps\u003c\/strong\u003e to help secure equipment during transport\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelps protect carbon fins and monofins\u003c\/strong\u003e from pressure and impact during travel\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAvailable in Black, Silver and White\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMade for monofin and carbon fin travel\u003c\/h3\u003e\n\u003cp\u003eThe most important use case for this product is simple: transporting a monofin without destroying it. Monofins are difficult to protect because of their width, shape and carbon construction. A normal sports bag may hide the fin, but it does not properly protect it.\u003c\/p\u003e\n\u003cp\u003eThe Double K All-in-One Hard Case is built for freedivers who travel with expensive equipment and do not want their fins treated like disposable luggage. It is especially useful for pool camps, depth trips, competitions, freediving holidays and instructor travel.\u003c\/p\u003e\n\u003c!-- IMPORTANT IMAGE IN DESCRIPTION:\nPlace the open case with monofin image here.\n\nRecommended filename:\ndouble-k-all-in-one-hard-case-monofin-inside.jpg\n\nRecommended alt text:\nDouble K All-in-One Hard Case with monofin inside\n\nWhy:\nThis is the most important image in the description because it proves the real buying reason: a monofin fits inside.\n--\u003e\n\u003ch3\u003eFits common large freediving monofins\u003c\/h3\u003e\n\u003cp\u003eThe Double K All-in-One Hard Case is designed for travelling with common large freediving monofins. This is one of the strongest reasons to choose this case over a normal suitcase or soft travel bag.\u003c\/p\u003e\n\u003cp\u003eThe key factor for monofin transport is usually the \u003cstrong\u003eblade width\u003c\/strong\u003e. Foot pockets are normally made from rubber or silicone and can be positioned slightly during packing. The carbon blade, however, is rigid and should not be bent, compressed or forced into a bag.\u003c\/p\u003e\n\u003cp\u003eWith an external case width of approximately \u003cstrong\u003e78 cm\u003c\/strong\u003e, the All-in-One Hard Case is suitable for large monofin shapes such as the \u003cstrong\u003eDouble K Delfit Monofin\u003c\/strong\u003e, \u003cstrong\u003eCetma Taras-style monofins\u003c\/strong\u003e and \u003cstrong\u003eMolchanovs PRO Monofin 4X Carbon\u003c\/strong\u003e. For reference, Molchanovs lists the PRO Monofin 4X Carbon with a blade width of \u003cstrong\u003e68 cm for the Small blade\u003c\/strong\u003e and \u003cstrong\u003e70 cm for the Regular blade\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThat is exactly the point of this case: it protects the wide carbon blade area that normal luggage is not designed to handle.\u003c\/p\u003e\n\u003ch3\u003eWhat can you pack inside?\u003c\/h3\u003e\n\u003cp\u003eDouble K positions the case as an all-in-one travel solution for freediving gear. It is designed for \u003cstrong\u003emonofins, bi-fins, short fins and wetsuits\u003c\/strong\u003e. Depending on how you pack, it can also carry selected accessories such as masks, snorkels, socks, gloves, small tools and training items.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eEquipment\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eWhy it matters\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFreediving monofin\u003c\/td\u003e\n\u003ctd\u003eMain reason to buy the case. The wide hard-shell format is designed to protect large carbon blades during travel.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon bi-fins\u003c\/td\u003e\n\u003ctd\u003eUseful when travelling with high-end bifins that should not be compressed inside a soft bag.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort fins\u003c\/td\u003e\n\u003ctd\u003eCan be packed together with other training gear for pool or technique sessions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWetsuit\u003c\/td\u003e\n\u003ctd\u003eHelps keep soft equipment together with your main freediving setup.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessories\u003c\/td\u003e\n\u003ctd\u003eSuitable for selected accessories depending on packing layout and remaining space.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- OPTIONAL IMAGE IN DESCRIPTION:\nPlace full gear setup image here if available and accurate.\n\nRecommended filename:\ndouble-k-all-in-one-hard-case-full-freediving-gear.jpg\n\nRecommended alt text:\nDouble K All-in-One Hard Case packed with monofin and freediving equipment\n\nWhy:\nThis image answers the second buying question: what else fits besides the monofin?\n--\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eTravel protection details\u003c\/h3\u003e\n\u003cp\u003eThe case uses an impact-resistant hard shell structure designed for diving equipment transport. The rigid shell helps reduce pressure on large carbon equipment during travel, while the wheels and carry handle make the case easier to move through airports, hotels, pool facilities and training centres.\u003c\/p\u003e\n\u003cp\u003eA key practical detail is the locking system: the case has \u003cstrong\u003ethree integrated 3-digit TSA combination locks\u003c\/strong\u003e along the side. This is a major advantage for travel because the case can be closed more securely than a zipper-based soft bag.\u003c\/p\u003e\n\u003cp\u003eInside the case, the equipment can be secured with internal straps. This helps keep larger items such as monofins and carbon bifins more stable during transport.\u003c\/p\u003e\n\u003c!-- IMPORTANT IMAGE IN DESCRIPTION:\nPlace the lock-side detail image here.\n\nRecommended filename:\ndouble-k-all-in-one-hard-case-three-tsa-locks-side-detail.jpg\n\nRecommended alt text:\nDouble K All-in-One Hard Case with three TSA combination locks\n\nWhy:\nThe three side locks are a real feature and should be visible.\nThe lock colour should match the case colour.\n--\u003e\n\u003ch3\u003eWho is this hard case for?\u003c\/h3\u003e\n\u003cp\u003eThis case makes sense if you own expensive freediving equipment and actually travel with it. If you only drive to a local pool with basic plastic fins, it is probably overkill. If you fly with a monofin, carbon bifins or a full freediving setup, it becomes a serious piece of protection equipment.\u003c\/p\u003e\n\u003cp\u003eIt is especially useful for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreedivers travelling with a monofin\u003c\/li\u003e\n\u003cli\u003eCarbon bifin owners who want better protection than a soft bag\u003c\/li\u003e\n\u003cli\u003eCompetition freedivers\u003c\/li\u003e\n\u003cli\u003eFreediving instructors travelling with equipment\u003c\/li\u003e\n\u003cli\u003ePool and depth training camps\u003c\/li\u003e\n\u003cli\u003eFreediving holidays where gear needs to survive flights and transfers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable colours\u003c\/h3\u003e\n\u003cp\u003eThe Double K All-in-One Hard Case is available in three colours:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack\u003c\/strong\u003e - clean, technical and understated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilver\u003c\/strong\u003e - modern, premium and easier to spot\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite\u003c\/strong\u003e - clean, bright and visually distinctive\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eColour does not change the function. Choose the colour that fits your travel setup and visibility preference.\u003c\/p\u003e\n\u003ch3\u003eComplete your monofin travel setup\u003c\/h3\u003e\n\u003cp\u003eThis case is especially relevant if you travel with a carbon monofin. It is designed to protect common large freediving monofins, including competition-style blades around 70 cm wide.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/monofins\" title=\"Shop monofins at Kaluna Freediving\"\u003eShop monofins at Kaluna Freediving\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eAlso suitable for travelling with carbon bi-fins, short fins, wetsuits and selected freediving accessories.\u003c\/p\u003e\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eDouble K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAll-in-One Hard Case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProduct type\u003c\/th\u003e\n\u003ctd\u003eFreediving hard travel case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecommended use\u003c\/th\u003e\n\u003ctd\u003eTransport of monofins, bi-fins, short fins, wetsuits and freediving gear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMonofin compatibility\u003c\/th\u003e\n\u003ctd\u003eDesigned for common large freediving monofins, including Double K Delfit, Cetma Taras-style monofins and Molchanovs PRO Monofin 4X Carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eKey fitting factor\u003c\/th\u003e\n\u003ctd\u003eBlade width; rubber or silicone foot pockets can usually be positioned during packing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eReference monofin sizes\u003c\/th\u003e\n\u003ctd\u003eMolchanovs PRO Monofin 4X Carbon: 68 cm blade width Small \/ 70 cm blade width Regular; Cetma Taras-style monofin: approx. 70 cm blade width\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eStructure\u003c\/th\u003e\n\u003ctd\u003eImpact-resistant hard shell structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTravel use\u003c\/th\u003e\n\u003ctd\u003eAir travel friendly structure \/ suitable for checked luggage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLocks\u003c\/th\u003e\n\u003ctd\u003eThree integrated 3-digit TSA combination locks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMobility\u003c\/th\u003e\n\u003ctd\u003eWheels and carry handle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003eApprox. 78 × 26 × 69 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eApprox. 6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eColours\u003c\/th\u003e\n\u003ctd\u003eBlack, Silver, White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eImportant travel note\u003c\/h3\u003e\n\u003cp\u003eAirline baggage rules differ. A case that is suitable for checked air travel may still be treated as oversized or special baggage depending on the airline, route and ticket class. Check your airline’s baggage policy before flying with a monofin or large freediving case.\u003c\/p\u003e\n\u003ch3\u003eKaluna Freediving Opinion\u003c\/h3\u003e\n\u003cp\u003eThis is not a product for everyone. For local pool training with basic equipment, it is probably too much. But if you travel with a monofin or expensive carbon fins, a hard case becomes completely logical.\u003c\/p\u003e\n\u003cp\u003eThe cost of a broken carbon monofin or damaged bifins is higher than the cost of proper transport protection. For serious freedivers, instructors and athletes, the Double K All-in-One Hard Case is less about convenience and more about protecting the equipment that actually makes the trip possible.\u003c\/p\u003e\n\u003cp\u003eThe strongest details are the wide monofin-compatible format, the hard-shell structure, the 78 cm case width and the three side-mounted TSA combination locks. This is exactly what makes it a real freediving travel case rather than just another oversized gear bag.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the Double K All-in-One Hard Case for?\u003c\/summary\u003e\n\u003cp\u003eIt is a hard travel case for freediving equipment, especially monofins, bi-fins, short fins, wetsuits and selected accessories.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use it for a monofin?\u003c\/summary\u003e\n\u003cp\u003eYes. Monofin transport is one of the main reasons to buy this case. It is designed for common large freediving monofins and helps protect wide carbon blades during travel.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the case fit large monofins like Molchanovs or Cetma?\u003c\/summary\u003e\n\u003cp\u003eThe Double K All-in-One Hard Case is designed for common large freediving monofins. Molchanovs lists the PRO Monofin 4X Carbon with a blade width of 68 cm for the Small blade and 70 cm for the Regular blade. Cetma Taras-style monofins are also around 70 cm wide. With an external case width of approximately 78 cm, the Double K case is built for this category of monofin.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy is blade width more important than the foot pockets?\u003c\/summary\u003e\n\u003cp\u003eThe carbon blade is the rigid and fragile part of a monofin. Foot pockets are usually made from rubber or silicone and can be positioned slightly during packing. The blade cannot be bent or compressed without risk.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use it for carbon bifins?\u003c\/summary\u003e\n\u003cp\u003eYes. It can be used for bi-fins, especially if you want better protection than a soft bag during travel.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow big is the case?\u003c\/summary\u003e\n\u003cp\u003eThe case measures approximately 78 × 26 × 69 cm.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow much does the case weigh?\u003c\/summary\u003e\n\u003cp\u003eThe case weighs approximately 6 kg.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the case have locks?\u003c\/summary\u003e\n\u003cp\u003eYes. The case has three integrated 3-digit TSA combination locks positioned along the side of the case.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs it suitable for checked air travel?\u003c\/summary\u003e\n\u003cp\u003eThe case is designed with an air travel friendly structure and can be used as checked luggage. Always check your airline’s baggage rules, because oversized or special baggage fees may still apply.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich colour should I choose?\u003c\/summary\u003e\n\u003cp\u003eChoose Black for a clean technical look, Silver for a modern premium look, or White for a bright and distinctive setup. Functionally, the colours are the same.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this case necessary for every freediver?\u003c\/summary\u003e\n\u003cp\u003eNo. It makes the most sense for freedivers who travel with a monofin, carbon bifins or a full freediving setup. For basic local pool training, a soft bag may be enough.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"DoubleK","offers":[{"title":"Carbon","offer_id":57100024086906,"sku":null,"price":650.0,"currency_code":"CHF","in_stock":true},{"title":"Silber","offer_id":57100024119674,"sku":null,"price":650.0,"currency_code":"CHF","in_stock":true},{"title":"White","offer_id":57100024152442,"sku":null,"price":650.0,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/0157\/7306\/files\/DoubleKAll-in-OneHardCaseAllColors.webp?v=1784806943","url":"https:\/\/kaluna-freediving.ch\/products\/double-k-all-in-one-hard-case","provider":"Kaluna Freediving","version":"1.0","type":"link"}