LaCrosse Alphaburly Pro Socks L Featuring full-length cushioning for maximum warmth and comfort, these USA-made socks are constructed from a Merino Wool blend for natural breathability. BUILT FOR COMFORT Our socks are designed with underfoot cushioning and flat toe seams for added comfort. MADE IN USA This sock is manufactured in the USA using imported fibers. ETHICALLY SOURCED MERINO WOOL BLEND Our ethically sourced, non-mulesed Merino Wool blend makes for a naturally breathable, soft, itch-free sock. ARCH SUPPORT Our socks are designed with arch support to help reduce fatigue.