adidas ultraboost 21 grethr grethr grefou 23367NVY This navy-colored sports shoe is

This navy-colored sports shoe is the perfect choice for the youngest adventurers

or any time you need lightweight support

DryTech waterproof bootie construction

It features a Flyknit constructed upper with synthetic nubuck overlays and a large visible Air Max unit in the heel

Another feature you'll notice is that these sneakers are available in black

adidas ultraboost 21 grethr grethr grefou 23367NVY This navy-colored sports shoe isEnergy was just energy until energy met Ultraboost 21. Prototype 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. Sock like fit Lace closure adidas Primeknit+ upper Textile lining Supportive heel counter Boost midsole