The adidas Ultra Boost Undefeated Performance Running is a running shoe designed in collaboration with the Los Angeles-based streetwear brand Undefeated. It features a breathable knit upper with a Shift Gray colorway, accented with Utility Black details. The Boost technology midsole provides exceptional energy return and cushioning, essential for all runners. This shoe includes a lightweight cage for maximum support and stability, while the Continental Rubber outsole ensures optimal traction on wet and dry surfaces. One notable feature is its upper construction, engineered with a PRIMEKNIT upper for superior fit and breathability. The PRIMEKNIT material is soft, flexible, and stretchable, made with advanced weaving technology for durability and a snug fit. Available since November 9th, 2018, at a retail price of $220. The Undefeated x UltraBoost ‘Shift Grey’ comes in a neutral colorway with subtle logo touches. A breathable Primeknit upper combines black and grey fibers and is supported by a translucent TPU cage featuring UNDFTD lettering. Mismatched tongue tags display Undefeated’s Five Strikes on the right shoe and an adidas logo on the left.