FEEL THE DIFFERENCE: The crew liner socks you’ve always wanted. Ultra-lightweight, super-comfy, and impressively durable, our Alturas men’s and women’s liner socks exceed every one of your expectations. 93% polypropylene, 6% nylon, 1% spandex YOUR FEET STAY DRY: Experience the power of our exclusive Wick Dry technology. It removes moisture build-up and keeps feet dry, reducing hot spots and the friction that causes blisters. This means more comfort to do the things you love BOOST YOUR PERFORMANCE: Fox River sock liners help control your foot temperature and add comfort with soft, smooth fibers. And thanks to the barrier they create, you can finally kiss those painful blisters goodbye as you enjoy an active lifestyle EXPERIENCE THE VERSATILITY: These aren’t just sock liners for hiking. They’re perfect as hockey liner socks or liners for work socks to make wearing steel-toe boots even comfier. You can even wear them on their own during extra-hot weather AMERICAN MADE; SINCE 1900: We’ve been a part of the lives of hard-working folk & outdoor lovers for well over a century. And we continue our commitment to quality right in the USA. All our products are guaranteed against manufacturing defects for 1 year