These Ultra Boost sneakers are made of a navy blue and white knit material for a comfortable fit. I've only worn them two or three times since I bought them, and they're in very good condition. The box is not included. The size is 24.5, but they run small, so they should fit someone who usually wears a 23.5. - Model Name: Ultra Boost - Color: Navy/White - Material: Knit/Synthetic Thank you for looking.