Hot. Hot. Hot. This Ultra-Light Coolmax sock is ready to roll when the rest of the world is inside hiding with the AC on. Coolmax yarns are engineered to move moisture away from your skin, to be fast drying and to enhance comfort. True Seamless construction assures a smooth fit and reduces blisters and hot spots. No slipping, no bunching, no bull. These puppies stay put and in place all day. High stitch count means less bulk-more comfort. Still made in Vermont. Guaranteed for life. Coolmax - Because wool is not for everyone. We use an exclusive Coolmax blend to create a sock with exceptional softness, durability and superior moisture management. True Seamless - Using the latest generation of Italian knitting machines, Darn Tough are able to knit ultra-light yet extremely dense socks with an undetectable toe seam, here in Vermont. The result is miles and miles (and miles) of blister-free bliss. Feel the difference of feeling nothing at all!