Robust, functional and comfortable to wear: these three properties are linked together in the adidas Performance Children snow boots Winter Hiker Mid GTX. The Gore-Tex membrane prevents moisture penetration. - Leather upper Gore-Tex membrane: breathable and waterproof with ClimaWarm technology keeps the foot warm lacing allows individual adjustment shoe tongue and upper edge of fleece heel and toe reinforced Removable TRAXION technology on the outsole: ensures stability and grip upper: Leather, Other material lining and insole: textile sole: Other materials (rubber )