Merrell Castle Rock Women's Lavender Gray Hiking Shoe - Size 7.5 Water-ready, agile hiking shoe. Its open designed, water-shedding upper hugs your foot to an aggressive, responsive trail platform made to flex naturally and connect to terrain, while protecting underfoot. Features include. a Lycra neoprene stretch collar for easy on and off, M Select FRESH antimicrobial agents to reduce shoe odor, and a UNIFly midsole that connect you to the trail and protects you from the terrain. · Synthetic · Vibram sole · Waxy waterproof leather fabric upper · Lycra neoprene stretch collar for easy on and off · Vibrio tc5+ outsole · Hollowed lugs for lightness · 3 mm lug depth