Cool, soft and fast drying, these insoles are designed with shock absorbing comfort foam that is 100% recycled and sustainably sourced. A plant-based, biodegradable polymer additive and hydrophilic molecules combine with fibers to dissipate water. Breaks down sweat into odor-free water and C02 thanks to their 100% natural self-activating enzymes. Provides a superb, breathable massage-like foam of comfort and promotes wellness. Insert in any types of shoes. Change once over used.