8in. tall 2.8mm thick premium full grain leather uppers with one piece vamp construction with no seams down the tongue for abrasion resistance and waterproofness; Reinforced double and triple stitching; 5mm nylon midsoles for extra support with pack loads; Boot hardware that swivels instead of breaking; Reinforced rubber sole guard for extra abrasion resistance; 1000 gram Thinsulate provides comfort in below zero temperatures; Windtex waterproof breathable flexible membrane; Lightweight K-Talon outsoles provide excellent traction; Brown Color