Darn Tough Pennant RFL OTC Ultra-Lightweight Socks - Men's Seafoam Large 8002-SEAFOAM-L-DARN. The Pennant sock checks all the boxes with its next-to-skin no-slip boot connection fatigue-easing arch support Merino Wool performance and a dash of drop-needle design. It's the best sock for skiing and riding because it's also Guaranteed for Life. Specifications for Darn Tough Pennant RFL OTC Ultra-Lightweight Socks - Men's: Manufacturer: Darn Tough Gender: Male Age Group: Adults Sock Height: Over-the Calf Socks, Cool Socks, Casual Socks, Mens Clothing, Sea Foam, Mens Socks, Arch Support, Fabric Material, New Product