Adidas - Men's Ultraboost 21 Running ShoeStylish, comfortable and supportive. These athletic sneakers check all of the boxes. Built with a sock like adidas Primeknit+ upper and responsive Boost cushioning. The updated Torsion System boosts forefoot stiffness by 15% for a more energized run, while 6% more Boost capsules power each step. Made with Primeblue recycled material, this shoe blends performance, sustainability, and school spirit in one bold design.