adidas ultraboost 21 cblack ftwwht pulaqu 09220-16 Our innovative ECCO SHOCK-THRU technology

Our innovative ECCO SHOCK-THRU technology is integrated into the sole to provide twice as much energy and suspension as our previous "shock technology"

The perfect look and feel for the weekend is our Santa Monica Sunrise Cros

Three-step closure in the back and adjustable shoulder straps

padded with PrimaLoft® for optimum heat-to-weight ratio and performance

Green safety buckle

adidas ultraboost 21 cblack ftwwht pulaqu 09220-16 Our innovative ECCO SHOCK-THRU technologyStep up your runs in these Ultraboost 21 shoes. 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+ textile upper Boost midsole Textile lining