Swim Fins / Flippers Unisex, adjustable fit (S/M 4.5-8.5) New with tags Open toe design and mesh vamp to reduce drag and chafing We provide the quick dry and shape support mesh bag, it is perfect for traveling. The hard sole comes with large anti-slip inserts, total foot protection " Made of TPR + PC + PP material, sturdy and keep enough flexibility for barefoot. Open heel with adjustable straps design makes the fins suitable for different foot types and sizes.