Features: Adjustable Open Heel Design:Ergonomic design, strong stability, greatly improve your swimming speed.Anti-slip bottom design, improve joint flexibility, improve kicking, legs not easy to fatigue. Material:TPE upper has low water absorption, shock resistance, heat insulation and moisture resistance.The dual density high performance engineering material, which forms the blade, combined with the third silicone based material creates a channeling effect. Wears Comfortably:High toughness material, not easy to aging, wearing more comfortable fit and long service life. 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. Compact Size:Perfect for Travelling:This short fins is an excellent choice for 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. Effect: Diversion ditch design, change the direction of water flow, increase swimming speed. Notes: 1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand. 2. Due to manual measurement, there is a tolerance in the product size. Specifications: Material:High performance engineering material Size,Shoe Length (cm), Recommend Size,Weight,Length,width S,48.5cm, 36-37,380g,48.5cm,19cm M,50.5cm,38-39,420g,50.5cm,24.5cm L,53cm,40-41,480g,53cm,26cm XL,55.5cm,42-43,535g,55.5cm,27cm includes: 1*Diving Fins