BOOST midsole Imported Nothing lasts longer than workwear. Especially when you patch up the holes and keep moving. These Ultraboost running shoes take style cues from denim workwear. Aside from the design, they have all the techs Ultraboost is known for, from a supportive adidas PRIMEKNIT upper to energy-returning BOOST to the extra forefoot and midfoot stability of the Linear Energy Push system.