Great Condition!! Brand New!! The adidas Ultra Boost 21 Triple Black (Women’s) is a running shoe released by adidas as part of their Ultra Boost line. The shoes have a fully black colorway covering the entire shoe from the upper to the outsole. The upper is made using a mix of PrimeKnit and recycled material made in part with Parley Ocean Plastic while the midsole is made using foam material. It also has a TPU Cage that wraps around the midfoot to provide added stability as well as display the iconic three stripes logo that is synonymous with the adidas brand. One of our favorite features of the adidas Ultra Boost 21 Triple Black (Women’s) is the use of continental rubber in the construction of the outsole to deliver enhanced grip and durability. This makes the shoe suitable for running across various surfaces.