adidas Ultraboost 21 Mens Running Shoes - The 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. > Support Type: Cushioning/Neutral > Surface: Road > Collection: adidas Ultraboost > Propulsion Technology: L.E.P Torsion > Midsole Technologies: BOOST > Sole Technologies: Continental > Upper Technologies: Primeknit+ > Lining: Synthetic > Insole Technologies: EVA Insole > Heel Technologies: External Heel Counter > Heel Drop: 10mm > Fastenings: Lace Up > Safety: Non-Reflective > Style: Road Running Shoes