La Sportiva Men's Primer Low GTX Hiking Shoe fabric-and-synthetic LIGHTWEIGHT TRAIL SHOE - La Sportiva's Primer Low GTX is a low-top, all synthetic, highly breathable 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 blister 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 reinforced compression-molded EVA / TPU inserts ANKLE SUPPORT - STB Technology stabilizes the foot by wrapping and unifying the midsole with the upper for the perfect fit and extra support and stability backcountry trail runners and ultralight backpackers need for high mileage days