Everything you expect from a rubber boot, plus the innovation only Ariat can deliver. Built from a flexible natural rubber blend and with a springy midsole cushioning every step, waterproof Woodstock keeps feet so dry and comfortable in the rain, mud, and muck that you ll forget you re wearing a welly. Tige - 100% Synthétique rubber, Doublure. et Chaussette - 100% Synthétique rubber. Semelle - 100% Caoutchouc.