With a full-grain leather upper, multi-density cushioned midsole and the weather protection of GORE-TEXA(R), the Kinesis Pro GTX is our premier, fully-featured backpacking boot that will hold up to years of rugged, extended treks-on or off the trail. Specs SIZE OPTIONS : 40 - 47 (half sizes); 48-50 (whole sizes) WEIGHT REFERENCE : 850g; 1lbs 14oz (1/2 pair size 42) UPPER : 2.4mm Smoothout Leather LINING : GORE-TEXA(R) Performance Comfort MIDSOLE : 2D PU OUTSOLE : VibramA(R) Biometric / XS Trek INSOLE : Activ Plus CUFF HEIGHT : High LAST : BD RAND : Full PRIMARY MATERIAL : Leather WATERPROOF-BREATHABLE : Yes PRODUCT CODE : 61000201