{"product_id":"hos-fin217","title":"Aqualung Express Open Heal Fins","description":"\u003cp\u003eOverview The Aqua Lung Express Open Heel Fins are performance-oriented scuba diving fins engineered to deliver comfort, power, and efficiency with every kick. Featuring Aqua Lung's innovative Armadillo propulsion system, these fins store and release energy throughout the kick cycle to help maximize thrust while reducing fatigue. Combined with spring straps and a comfortable foot pocket design, the Express SS is built for divers seeking dependable performance in a wide range of diving conditions. Best For Recreational scuba diving Divers seeking efficient propulsion with reduced leg fatigue Use with dive boots in warm, temperate, and cold water environments Not Ideal For Travelers prioritizing ultra-lightweight packing Divers seeking a highly rigid technical diving fin Key Features Armadillo Propulsion System: Ultra-elastic rubber membrane stores and releases energy throughout the kick cycle for enhanced propulsion Mid-Foot Flex Joint: Connects the blade farther back on the foot pocket to help reduce strain on ankles and toes Efficient Energy Transfer: Variable-thickness foot pocket securely connects the foot to the blade for improved kicking efficiency Water Channeling Side Ribs: Rubber side rails help direct water along the blade while reducing spill-over Spring Heel Straps: Stainless spring straps with soft TPR heel pads provide easy donning and a secure fit Enhanced Grip: Oversized anti-slip rubber pads improve footing on wet surfaces Specifications Fin Style: Open heel Strap Type: Spring heel strap Propulsion System: Armadillo elastic membrane technology Foot Pocket: Ergonomic multi-density design Blade Design: Mid-Foot Flex Joint with water-channeling side ribs Fit \u0026amp; Sizing The open-heel design is intended for use with dive boots. The spring strap system automatically adjusts for a secure fit while making the fins easy to put on and remove, even when wearing gloves. How the Armadillo System Works The Express fin uses the same propulsion principles developed for\u003c\/p\u003e","brand":"Aqualung","offers":[{"title":"Default Title","offer_id":43645421256765,"sku":null,"price":160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/5298\/0285\/files\/fin217-blk.jpg?v=1789730853","url":"https:\/\/fatguyscubasupply.com\/products\/hos-fin217","provider":"Fat Guy Scuba Supply","version":"1.0","type":"link"}