OUTSOLE MATERIALS---Waterproof mesh upper and Hydroshield Membrane waterproof. 200 Grams Thinsulate Insulation for -30℃. ANTI-SKID PERFORMANCE---Rubber toe cap protection and rubber outsole for optimal trail grip. and the technology can protect your feet. You will find it that a very aggressive sole to grab the rocks and give good traction. ADVANCED TECHNOLOGY---Integrated inserted EVA midsole,waterproof hiking boot features our lightweight, durable midsole for long lasting comfort, superior cushioning.