You've got a plan, and intense cold and snow won't stand in your way wearing the high-level warmth and comfort features of the Isotherm 8. These TPU-shelled waterproof boots don't hold back: 400 grams of Primaloft insulation, sealed up with a waterproof membrane to keep perspiration and precipitation out, on top of a heat-reflective insole – all protecting your feet in below zero temps. A snowshoe strap ridge improves your snow transportation options.
UPPER/LINING • Full grain leather and pig suede upper • TPU waterproof shell • Bellows tongue keeps debris out • Snowshoe strap ridge for stability • Waterproof membrane provides impermeable but breathable barrier • Fleece lining treated with Aegis® antimicrobial solution • 400 grams of PrimaLoft® Insulation • Ortholite® Anatomical Footbed
MIDSOLE/OUTSOLE • ActiveHeat(tm) Insole with Silver Reflective Film for added warmth • In-Board(tm) Compression Molded EVA Footframe with Grade 4 Nylon Insole cushions for backpacking with a light pack • Merrell Air Cushion in the heel for stability • 6mm Sole lug depth • Vibram® Thermo Sport /Trek Dura Rubber • Comfort Range to -40F/-40C • Weight: 2 lbs. 2 ozs.