Darn Tough Vermont offers the largest collection of Berry Compliant performance socks in the tactical arena covering boot, dress, and pt socks. Whatever your uniform requirement, whatever your mission, we're with you! Knitting with premium grade merino wool at a stitch count of 1,441 stitches per square inch, our socks continue to be the most comfortable, best fitting, and most durable socks available today. Darn Tough Vermont is First on Foot, and still Made in Vermont, USA.