La Sportiva Men's Synthesis Mid GTX 100% gore-tex LIGHTWEIGHT TRAIL SHOE - La Sportiva's Synthesis Mid GTX is a mid-height, versatile hiking shoe designed for moving fast on all types of terrain; Durable, ultralight materials minimize fatigue during long hikes and runs GORE-TEX PROTECTION - Waterproof, breathable Gore-Tex Surround technology keeps your feet dry during extended day hikes or overnight backpacking trips no matter the weather BREATHABLE - Ultralight moisture-wicking AirMesh fabrics with Nano-Cell technology keep your feet cool on hot days, control moisture, and prevent blisters STABILITY & CONTROL - Vibram Nano sole with Impact Brake System provides excellent traction and stability on steep descents; Confidently navigate rocks, roots, and other obstacles with the reinforced compression-molded EVA / TPU inserts ANKLE SUPPORT - STB Technology stabilizes the foot by wrapping and unifying the midsole with the upper; Adjustable bungee pull cord lacing system stays put and offers a more secure fit than traditional lace-up shoes Moisture and warmth escape from below your feet through the Gore-Tex membrane into a spacer, and from there through vents on the sides of the shoes Award-winning Gore-Tex Surround technology results in all-around breathable and waterproof hiking footwear that moves sweat quickly away via patented open construction Backpacker magazine conducts rigorous field testing to select award winners in recognition of their innovation in design, materials and performance Award-winning Gore-Tex Surround technology results in all-around breathable and waterproof hiking footwear that moves sweat quickly away via patented open construction Gore-Tex Extended Comfort lining and Gore-Tex Surround footbeds provide 360 of breathable and waterproof protection to keep feet dry, both from inside and outside.