adidas AX2 Mid Gore-TEX Trail Walking Boots - AW16 Synthetic GORE-TEX Lining - Waterproof and breathable, keeps your feet dry whilst still allowing air to permeate the boot. Synthetic Upper - For lightweight durability on the go. Speed Grip - Designed for added grip and traction. Lightweight EVA Midsole - For long-term, lightweight cushioning that that doesn't compromise fit or comfort. Moulded Sockliner - Hugs the foot for a snug, supportive fit.