The Simms Guide Guard Socks feature a new anatomically correct design for easier on-and-off. Simms combines 3.5 mm neoprene and abrasion-resistant textured nylon jersey to create durable and non-slip socks. In addition, the neoprene is perforated for quick drainage. When paired with your wading boots, these socks will keep your feet nice and toasty. There is no doubt that Simms Guard Socks will meet all your expectations and then some!