These fins are made of high-quality PP (Polypropylene) and TPR （Thermoplastic Rubber）
Lightweight and durable.
Self Adjusting Foot Pocket system, special softness and elasticity of the blends make for a consistently soft and adherent fit.
Anti-slip rubber pads grip the wall during flip turns and on a wet floor.
Using long blade fins to swim you will be much faster but this will require more leg strength.