BENEFITS Keeps the insole of the shoes intact, therefore prolonging their lifespan. They are 100% Vegan and the cushions is made with an innovative material derived from lake algae biomass USE These comfort insoles are made with premium microfiber lining and provide all-day comfort What makes these insoles amazing is the cushion made of flexible ALGAE EVA foam (BLOOM Foam) Ideal for all season shoes. INSTRUCTIONS Insert in any types of shoes Change once over used