Anytime No Show Heel Grip Sock

The Anytime No Show Heel Grip Sock is Allbirds' lowest-profile sock, updated with a small silicone heel grip that stops it sliding down into your shoe. It is knit in North Carolina from imported yarns in a lightweight blend of 40% tree-derived TENCEL Lyocell, 29% recycled nylon, 27% organic cotton and 4% spandex, with an elastic arch band for gentle support. Allbirds designs it to stay hidden inside shoes for a barefoot look and suggests it for everyday wear, walking and workouts. A single size L sock weighs 0.4oz. Sizes run S (women's 5 to 7), M (women's 8 to 10, men's 8), L (women's 11, men's 9 to 12) and XL (men's 13 to 14), and the brand says it fits true to size. Machine wash cold with a mild detergent and air dry.