Rubber sole One Side Zipper: comes with an easy to use flip, zip and go zipper-closure, complete with an attractive adjustable lace-up for a perfect fit. Warm Faux Shearing Interior: Soft feeling, breathable, and durable to keep your child's foot warm and to make shoes more comforatable and sterilized. Heel Support: reinforce the heel cup, increase support for healthy foot grwoth, and reduce over-pronation. Plush Insole:preserve warmth and mosture- wicking for your child all day comfort at winter time. EVA outsole offers maximum cushioning and durability for more support and stablity of your child's foot.