Ultraboost 21 low-top sneakers from adidas featuring black, signature 3-Stripes logo, Primeknit construction, round toe, front lace-up fastening, logo patch at the tongue, branded insole and chunky rubber sole. These styles are supplied by a premium sneaker marketplace. Stocking only the most sought-after footwear, they source and curate some of the most hard to find sneakers from around the world..