THICK COTTON SOCKS WITH TOWELING LINING: Made of high quality, skin-friendly cotton! Soft terry covers the whole sock, making them ultra soft and incredibly comfortable. They're like a warm hug for your little one's feet, keeping them cozy even on cold days. Stretchy fibers are a big plus! They ensure the socks stay on well and also adapt as your child's feet grow. With strong elasticity and a non-tight fit, you won't have to worry about those pesky marks on your child's chubby ankles. Rolled cuff design: It provides more dressing options!Whether you prefer ankle or crew socks, these have you covered. Unroll the cuff, and they'll keep your child's calf warm and snug, and they won't slide off easily. Large area anti-skid grippers serve as reliable guardians. They prevent children from slipping and falling, which is particularly wonderful for those active little kids who enjoy running, scooting, and jumping all around the house. Moreover, they are ideal for babies who are just starting to learn how to walk or crawl. SIZE TIPS: 1."0-3 Months" is not suitable for newborns and premature infants. For more information, please refer to the size chart. 2.If your child's measurements fall between two sizes and they have a slender build, the smaller size is likely to provide a better and more comfortable fit.