Orvis Men's Midweight OTC Wader Fishing Sock - The Midweight OTC Wader Sock boasts seasons-spanning versatility. Midweight merino wool ideal for spring, fall, or even wet wading Over-the-calf height Perfect fit and patterned after Orvis wader booties and boots Reinforced zones in heel, toebox, and top of ankle Ribbed arch eliminates bunching Style: 3A16