The Supreem Foam used in FREEWATERS SANDALS is specifically designed to provide instant soft cushioning while also maintaining long-lasting rebound, making it a rare and valuable feature. The rugged webbing strap ensures a comfortable and secure fit for the foot, while the Adventure Ready rubber sole offers extra grip. Additionally, with each purchase, you are not only getting a high-quality sandal, but also supporting FreeWaters' clean drinking water projects.