This 10-pack of crew socks is totally comfy & unisex, too. Wearable & shareable for her, for him, for them. Rib-knit openings. Notched seams at toe and heel for added comfort. Textured logo at soles. Soft-knit fabric, with comfortable stretch. Size 0-6M = 19"-27" height, 7-17 lbs. weight. Size 6-12M = 27"-29" height, 17-22 lbs. weight. Size 12-24M = 29"-33" height; 22-30 lbs. weight. Size 2T-3T = 33"-39" height; 30-36 lbs. weight. Size 4T-5T = 39"-45" height 36-46 lbs. weight. machine wash according to the care instruction label .