LanS Kids Fleece Rain Boot Liner Socks Fleece Imported FOR INFANTS AND TODDLERS THROUGH TO KINDERGARTEN - These full boot length liners are suitable for children aged from 9 months through to about 6 years: X-Small usually fits size 3 - 5 US infant / small toddler boots; Small usually fits size 5 - 7 US toddler boots; Medium usually fits size 8 - 10 US boots for preschoolers; and Large usually fits size 10 - 11.5 US boots for Kindergartners. GREAT FUN FOR BOTH OUTDOORS AND INDOORS - Put these fancy inner liners in rain boots and they become waterproof snow boots, great for when they're splashing in puddles, stomping in the snow, or at daycare. Alternatively, wear them by themselves and they make good slipper socks for wearing around the house. GENDER-NEUTRAL COLOR DESIGN AND EDUCATIONAL TOO - The charcoal grey color and the adorable dog design makes these boot socks perfect for both boys and girls, no matter what clothing they're wearing. But the puppy ears aren't just cute, because they help your child learn how to match each sock to the correct foot - just make sure the white ears are touching and problem solved! (For those who can already read, the words "Left Foot" and "Right Foot" are also written on the back of each white ear.) COMFY, SOFT, AND EASY TO CLEAN - Our stylish rain boot inserts are made from 100% furry polyester fleece, so they're super soft - and washable too, because we know how all kids attract dirt like magnets. They're also comfortable to walk on because the soles are seamless, so there are no hard ridges to dig into your baby's feet, and thick enough to provide insulation and warmth while thin enough to be lightweight. EASY TO USE - If your toddler is going to wear these outside, just pop one inside each leg hole (they're designed to be used with wellington boots that are 6 - 7 inches, or 15 - 18 cm, tall), then fold the cuff over the top to cover the opening (which will help them stay up), and your little one's feet will be snug, cozy, warm and dry, summer and winter alike, no matter the weather.