Bogs Women's Rue Gum Rubber Shoe 100% Rubber Rubber sole Heel measures approximately 1" Gum Rubber outsole for added traction 2mm Bogs Neo-Tech + 2mm Airmesh Contoured EVA insole with Aegis antimicrobial protection Durable hand-lasted rubber over a four way stretch inner bootie 71016, 71017, 71018, 71019, 71153