★★★ Please be sure to read my profile. I've written "How to Request a Price Reduction" there. ★★★ This is a ROCKBROS triangle frame bag (cycle bag) for bicycles. It has a large capacity, so it can hold almost anything, but clothing is a tight fit. Dimensions are: Top tube side: Approximately 24cm Seat tube side: Approximately 22cm Down tube side: Approximately 30cm Thickness: Approximately 5cm The product is very slim and doesn't interfere with pedaling. The capacity is 1.5L. As a ROCKBROS product, it has clever features throughout. It includes a mesh pocket, a wire with a buckle to prevent items from falling out, rubber zipper sliders (waterproof zippers) that don't make noise and have slider pockets to prevent mud from clogging, and an air pump pocket on the bottom, making it extremely user-friendly. I used it for about six months, and it's in very good condition because I took care of it (wiped it down with water after touring and stored it indoors). There are no tears or scratches. I cut the included Velcro straps (4 fixed) by a few centimeters to fit the thickness of my tubes. However, my tubes were quite thick, so this length should be sufficient to secure it for normal tube diameters. Thank you. #★Thank you.