adidas Ultraboost 21 Mens Running ShoesThe latest adidas Ultraboost 21 Mens Running Shoes see’s a radical redesign of the neutral runner. This latest development see’s 6% more Boost Capsules in the full length midsole for explosive energy return in each step. The adidas LEP replaces the original Torsion System delivering a 15% increase in forefoot bending stiffness. Finally the Primeknit+ upper is made with Primeblue – a high performance recycled material made in part with Parley Ocean plastic.
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