Lorpen Multisport Coolmax Shorty Socks 75% coolmax 75% Coolmax - designed to move moisture from the skin to the outer surface of the sock where it can evaporate once it is exposed to the outside environment. Instep cross brace. X marks the spot of our Lycra cross brace that hugs the sock to the top of your foot, ensuring a very sensitive area remains wrinkle free. 10% of the overall yarn content is knit with real Lycra yarn from Invista. Flat knit toe seam: its expensive to make toe seams with this special stitch, but we think it delivers a superior seam that is virtually impossible to feel. Machine wash and dry.