Free Blast Pro GTX - Concrete Grey The updated Free Blast Pro GTX combines the best of our original Free Blast styles, bringing together the waterproof/breathable performance of the GORE-TEXA(R) membrane with the Italian pop and style of the colorful suede uppers. The result is a classic outdoor design that&';s both superbly capable and good looking. Matched with a stable, grippy VibramA(R) Junko outsole, the new Free Blast Pro GTX is a low-cut hiker that&';s light, fast, comfortable, supportive, and stylish to go from hiking to scouting, shed hunting, adventure travel, and more. Style Number 0217ZDGMG