Material: fins are made of rubberSize: 40-44Color: green, blue, orange, pinkAdjustable 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. Wears Comfortably, Support Various Way to Put On - Carefully select high quality material, soft foot pocket, flexible enough for barefoot, but can also be worn with fin socks or dive booties which help to protect a diver's feet from the cold, and blisters. Quick and Easy to Try it On and Adjust Size Up or Down - Soft heel straps with large thumb loops, giving you easy one-time adjustment and allowing you to easily put on and remove the fins.Compact Size, Perfect for Travelling - This short fins is an excellent choice for avid travelers as the short blade is lightweight and compact, making it ideal for packing with ease. And it is a useful swimming aid either for pool or sea swim-lovers or snorkelers.