Each pair donates to Conservation International to protect endangered wildlife and their habitats.Each pair works to protect our planet’s wildlife and their critical habitats with Conservation International.Small fits womens US shoe sizes 5-9, men’s US shoe sizes 4-8, and EU shoe sizes 36-40.Medium fits womens US shoe sizes 9.5-14, men’s US shoe sizes 8.5-13, and EU shoe sizes 41-47.SustainableCertified OrganicCertified FairtradeCertified VeganMembers of 1% for the Planet