Flexible knit upper is lightweight and breathable Supportive overlays at the midfoot and heel Low profile silhouette for a classic look Lace-up construction for a snug fit BOOST cushioning for elevated comfort Grippy rubber sole for durable traction The adidas UltraBOOST 21 is imported. Built for performance and boasting plenty of classic streetwear vibes, the Men's adidas UltraBOOST 21 Running Shoes are your go-to choice for those days when comfort and style can't be compromised. Experience functionality like never before thanks to the energy-returning BOOST midsole that brings comfort with each and every step.