MICRO CREW HEIGHT - A shorter, more concise take on the traditional crew height. Peeks just above the top of a standard hiking boot. See chart below if other heights may be better for you. GUARANTEED FOR LIFE - Darn Tough's famous guarantee - if these socks wear, tear, or develop holes, Darn Tough will replace them no questions asked. No strings. No conditions. Over the years, when you open your sock drawer this is the pair you’ll keep grabbing first. MADE IN THE USA - Every pair of socks is knit in Northfield, Vermont - the perfect testing ground for the finest premium all weather performance socks.