Adidas Ultraboost Primeblue Triple Black Worn once Excellent condition Size 9 I am very picky about my running shoes and the Adidas ultraboost are my favorite. They are so comfortable and it’s the only running shoe I will wear now. I wore these one time and felt they ran about a size big. They are a size 9 but fit more like a 10, and I decided on a different color combo.