Give your performance the ultimate 'boost' in the adidas Ultraboost 21. Decked out for comfort and responsiveness, these shoes feature the patented Boost cushioning system for unbeatable energy return. The use of Primeblue, a high-performance recycled material containing Parley Ocean Plastic, makes these trainers an eco-friendly choice. Put your best foot forward every time you train in the adidas Ultraboost 21.

• Linear Energy Push system increases forefoot and midfoot stiffness for an extra energy push.