Product description TO ADJUST THE STRAP Loosen: Take the buckle upward and pull the heel strap backward. Tighten: Pull the strap backward directly. Tips: We recommend you take the fins on and off by making the strap loose or tight, as the clip is designed to fix very tight with the buckle to avoid accidental detachment. The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. CAPAS swim fins QUICK RELEASE BUCKLE To take off the strap: Press the side button and pull the strap backward. Tips: The CAPAS newly-updated buckle of the 2026 version, which can be buckled/unbuckled quickly and smoothly, has solved the buckle's loosening/missing problem of the 90% flippers on the market. The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. CAPAS swim fins Previous page Next page CAPAS FINS DIMENSIONS Size: Kids JR(XXS/XS) Size: S/M Size: L/XL Length Fins: 13.39 inches / Foot pocket: 7.6 inches Length Fins: 15.75 inches / Foot pocket: 9.69 inches Length Fins: 16.34 inches / Foot pocket: 10.24 inches Width Fins: 6.1 inches / Foot pocket: 3.74 inches Width Fins: 7 inches / Foot pocket: 4.41 inches Width Fins: 7.17 inches / Foot pocket: 4.72 inches Weight 0.51kg/pair Weight 0.71kg/pair Weight 0.75kg/pair About this item Adjustable Open Heel Design, Good for Sharing - The open-heel design means each fin can accommodate a wider range of sizes, so family members or friends can share equipment more easily. The best parts is the filter pads inside the fins can keep fins in shape when store it. Wears Comfortably, Support Various Way to Put On - Carefully select high qualit