updated Ultra boost with a complete 360° female fit improvement. re-engineered rubber outsole. 4% more forefoot energy return, compared to Ultraboost 21 for women. PRIMEKNIT upper includes a narrower heel fit, designed to avoid heel slip and blisters BOOST midsole with a Linear Energy Push system Regular fit Lace closure adidas PRIMEKNIT textile upper Soft heel fit Linear Energy Push system BOOST midsole Weight: 10 ounces Stretchweb outsole with Continental™ Better Rubber Yarn in upper contains at least 50% Parley Ocean Plastic  and 50% recycled polyester GUC - has some scuffs - see pics, only work maybe 10 times Womens size 9 is approximately men's size 8 Color: ecru / amber / orange