TERREX FREE HIKER GTX MEN'S HIKING BOOT NEXT-GENERATION COMFORT FOR EXTENDED HIKES. Move and explore. These lightweight hiking shoes deliver next-generation comfort and freedom of movement for hikes both long and short. The adidas Primeknit upper hugs your foot for flexible, all-terrain stability, while the Boost midsole delivers endless energy to keep you moving up or down the trail. A GORE-TEX membrane sheds water while letting your feet breathe for all-conditions wear. All-conditions traction: Continental Rubber outsole for extraordinary grip even in wet conditions. Seamless support: adidas Primeknit 360 seamless upper offers an engineered fit that expands and supports as you move through each stride. Seals out the elements: Knitted ankle gaiter design seals out gravel and dust.