These are gently used for a day and are in excellent used condition.UpperTextile: is a lightweight material, which is offered in a very wide color scale and is mainly used for summer footwear.Synthetics: unlike textile, synthetic fibers are stronger, more durable and quick-drying.adidas PrimeknitMidsoleBOOST: The technology of a thousand smaller particles that reduces the force of the impact and at the same time yields an extremely high energy return.SoleContinentalCaring for the environment never looked (or felt) so good. Support your fitness goals while you support the planet with the adidas by Stella McCartney Ultraboost 21, the latest incarnation of our most famous running silhouette that was designed and tested for 10km runs.The shoes are the perfect mix of style and functionality, with nods to both Stella McCartney's powerful visual identity (here's looking at you, metallic upper) and adidas' performance-first approach to design. Set on the uniquely responsive Boost midsole and made using Primegreen materials, your feet will feel as light as your conscience does when you slip them on.Once you get going, the sock in a cage upper is designed to keep you feeling comfortable and supported as you chase your runner's high.Run a bit large imo for adidas so if your like an 8.5 they should be perfect!