Ultraboost 4.0 DNA low-top sneakers The UltraBoost 4.0 DNA sneakers are back in an all-white colour, resulting in a super clean look. Here, a Stretchweb outsole featuring Continental™ rubber and a Boost midsole offers comfort on every step. Imported Composition Sole: Rubber 100% Lining: Fabric 100% Outer: Fabric 100%