Keen Men's Coldpack 3 Thermo Mid Waterproof BootA versatile winter boot to keep you dry and delivers traction in any conditions mother nature can throw at you. Waterproof exteriors and 200 grams of insulation will keep you dry and warm for your typical cold weather winter activities. 200G Primaloft Insulation Waterproof Vibram Arctic Grip Features Waterproof membrane seals out water and lets moisture escape Bellows tongue keeps out debris Protective and abrasion resistant rubber toe cap 200 grams