Ultraboost 21 Solar Red / Core Black / Gold Metallic Running Shoes Store:Adidas Store The uppers are made from

The uppers are made from the label's signature nylon

These days

which is reflected in the depth in suede and textures throughout the shoe

They're made from organic canvas that's overlayed with soft suede and have a special lacing system that's designed to tie around your ankles for a neater look

Say hello to incredible energy return

Ultraboost 21 Solar Red / Core Black / Gold Metallic Running Shoes Store:Adidas Store The uppers are made fromPrototype after prototype. Innovation after innovation. Testing after testing. Meet us in the hot pursuit of the pinnacle harmonization of weight, cushioning, and responsiveness. Ultraboost 21. Say hello to incredible energy return.