CAcB sox Women's (3 Sizes) Low Cut No Show Socks w/Silicone Heel Grip Silicone grips all around the sock cuff, making it stay on your feet and keeps the sock in place without the hassle of it coming off from time to time. Though the fabric on the instep is lace, the premium quality is equal to the cotton in the bottom. The laced top of the sock makes for a feminine look when paired with certain shoes. 75% Cotton - Cotton bottom absorbs sweat. Fits US size 5.5-9. FBA Shipment is Available on the item marked as "Fulfilled by Amazon". Regarding items marked as "Ships from and Sold by CAcBsox", FREE SHIPPING is available and only needs about 10-15 days.