Goodbye gravity. We designed these adidas Ultraboost 20 "Black/Grey" Women's Running Shoe using insights from space. Together with NASA, we ran experiments in gravity to micro-tune Boost midsoles to perform better on earth. And because all the innovation is pointless without thought for the planet, the shoes stand as part of our commitment to help end plastic waste. Benefits Lace closure Textile upper Textile lining Boost midsole Size 8.5 womens (mens size 7) Adidas ultra boost, NASA edition in good used condition and cleaned really well, they still has a ton of life in them. Feel free to ask any questions