These Adidas Questar Boost trainers have all the athletic technologies combined with the best of aesthetically pleasing looks. Featuring a breathable mesh and flexible upper fused with a Boost energy feedback system in the heel, the Questar Boost will take you forward in style and performance.These men’s running shoes feature Boost energy feedback return in the heel offering a more comfortable, plush run. Adidas’s signature Torsion System provides premium mid-foot support for a well-balanced and supported run, while the upper allows natural breathability keeping you cool and comfortable throughout wear.Please NoteThese Adidas Questar Boost trainers are sold as B grades which means there may be some very slight cosmetic issues on the shoe and they come in a white Adidas box with the Adidas brand authenticity details attached to it. Expresstrainers.com have checked every pair of these shoes and in our opinion all are very saleable and carry very minor imperfections, if any at all. All shoes are guaranteed against fair wear and tear and offer a substantial saving against the normal high street price. The overall function or performance of the shoe will not be affected by any minor cosmetic issues. B Grades are original authentic products released by the brand manufacturer with their approval at greatly reduced prices. If you are unhappy with your purchase we will be more than happy to take the shoes back from you and issue a full refund.