Thru-hiking the PCT is not for the faint of heart. Though you might go it alone, you'll always be in good company with a pair of great-fitting, moisture-wicking socks. Your best bud is a lightweight hiker with enough cushion to keep your feet in prime condition. If you make it to Canada, swash those socks immediately and start planning the next trip — there's always available mileage when your socks are unconditionally guaranteed for life. Darn Tough donate 5% of sales to help support the Pacific Crest Trail Association. Specs: Micro crew socks average 8.5 in. from heel to cuff - expect them to show about 6 in. above a low hiking shoe or just above a standard hiking boot A performance fit means no slipping, no bunching, no blisters for peak hiking comfort If you're out there - crushing or cruising the Pacific Crest Trail - Darn Tough are with you and thank you for helping give 5% back to the PCTA Multi-zone mesh panels improve venting and flexibility, while reducing bulk and pressure points Merino Wool is at home on the trail, naturally moving moisture to keep feet fresh and dry in all weather Lightweight socks breathe naturally and deliver flexible, all-day comfort for summer hiking The “still” in Still Made in Vermont, USA is personal. Darn Tough knits all their socks at their VT-based Mills Unconditionally Guaranteed for Life - if these aren’t the longest lasting socks you’ve ever owned, return them for another pair. 52% Nylon 45% Merino Wool 3% Lycra Spandex