Timberland - Nanook Hike (Dark Brown) - Men's: For on the trail or just kicking back, this boot offers guaranteed waterproof construction. Premium waterproof leather upper for warmth and waterproofness that doesn't sacrifice style, fit or function. Timberland Guaranteed Waterproof construction. 200 grams of Thermolite Ultra insulation for ideal warmth without excess bulk. EVA midsole with TPU insert provides lightweight comfort with enhanced stability. Footbed liner reflects heat back up to foot while providing additional insulation from the ground. Smart Comfort system chassis for enhanced comfort. Rubber lug outsole optimized for snow and ice traction. From the Timberland Weathergear Series.