VERSATILE TRACTION: OmniTrax Interchangeable Sole System for traction on the fly; easily change soles as conditions or terrains demand. WATERPROOF: Waterproof breathable bootie construction combined with waterproof leather keeps feet bone dry. FIT: Reinforced heel counter provides performance fit and stability. INSULATION: Removable wool liner provides warmth & moisture wicking performance. TEMP RATING: Comfort rated down to -20 Degrees Fahrenheit. IT'S A WINTER-READY BOOT. IT’S A HIDDEN SLIPPER. AND IT’S 100% BONFIRE PERFECT.