Product detailed description Materials upper part synthetic fabric, washable mesh lining, treated with AEGIS antimicrobial technology rubber sole rubber laces, Velcro strap The optimal oversize for year-round shoes is 1-1.2 cm. Recommendations for foot measurement and choosing the right size: How to choose your shoes. Made in China, the materials meet European standards and are safe. Keen Seacamp II Blue Depths/Gargoyle AD (CNX) Barefoot Sandals