ULTRA-LIGHTWEIGHT LINER SOCKS BUILT TO PREVENT BLISTERS: Designed for hikers, workers, and anyone on their feet all day, the Alturas crew liner sock uses Fox River's exclusive Wick Dry technology to remove moisture build-up, eliminate hot spots, and stop the friction that causes blisters. So you can focus on the miles ahead.

KEEP FEET DRY WITH WICK DRY TECHNOLOGY: Our proprietary Wick Dry system actively pulls moisture away from your skin, keeping feet dry and comfortable whether you're wearing them as hiking sock liners, boot liners for work, or standalone socks during warm weather activity.

SMOOTH, FLAT-KNIT CONSTRUCTION FOR ALL-DAY COMFORT: Made from 93% polypropylene, 6% nylon, and 1% spandex, these ultra-lightweight liner socks feature a smooth, flat-knit construction and a flat comfort toe seam that eliminates bulk and irritation, even inside the tightest work boots or hiking boots.

THE MOST VERSATILE SOCK LINER YOU'LL OWN: These aren't just hiking sock liners. Wear them as hockey liner socks, liner socks for cold weather under wool or thermal socks, work boot sock liners for steel-toe boots, or on their own during hot weather. One liner sock that handles every condition.

AMERICAN MADE SINCE 1900 , GUARANTEED: Fox River has been crafting performance socks for hard-working people and outdoor lovers for over 120 years, right here in the USA. Every pair is backed by our 1-year manufacturing defect guarantee. Quality you can count on, from a brand that's earned it.