Design: Oiled waterproof nubuck leather and abrasion-resistant ripstop textile upper 100% recycled 200g Primaloft(R) BIO(TM) insulation to keep your feet warm Quick-drying 100% RPET REPREVE(R) laces and webbing Heel pull loop for easy on and off In-Shoe Comfort: B-DRY waterproof membrane lets sweat escape while keeping moisture out Durability & Traction: Vibram(R) XS Trek Arctic Grip Canmore outsole is specifically engineered and designed to perform on wet ice Additional Details: Weight: 16.5 oz./463 grams This style runs small. It is recommended to order up a half size.