How do you bring even more ease to shoes that are already built around comfort? Turn them into slip-ons. This lifestyle version of the Ultraboost has a laceless design that gives it an ultra-clean take on a silhouette rooted in running. Crisscross straps bring extra lockdown to the soft adidas PRIMEKNIT upper. And with the incredible energy return of BOOST, you'll feel fresh on your feet all day.