For example, it has far less exoskeletal structure than the UltraBoosts. Instead of an exterior heel cup that wraps all the way around, the PureBoost has heel “pads” located on either side of the shoe. The sole has the same technology as the UltraBoost, but a bit less defined.

adidas Boost technology is a product of the adidas Innovation Team (AIT) and German chemists BASF. It was created to bring together the formerly contradictory benefits of soft and responsive cushioning. At the time, EVA foam was the industry standard for performance running shoes.

Created to give you the softest cushioning under your feet, adidas Ultraboost running sneakers will help you expand your range and go farther than ever before.

HOW IS BOOST MADE? To create Boost, thermoplastic polyurethane particles are expanded to form closed cells around tiny pockets of air. The resulting product is known as expanded thermoplastic polyurethane — or eTPU, for short.