Rubber sole Boost midsole Imported Lace closure Love unites. Celebrate Pride in this lifestyle take on the Ultraboost running shoes. The adidas Primeknit upper pops with a patchwork of rainbow colors. The Boost midsole offers comfort you'll have to feel to believe. This product is made with Primeblue, a high-performance recycled material made in part with Parley Ocean Plastic. 50% of the upper is textile, 75% of the textile is Primeblue yarn. No virgin polyester.