It's incredibly user-friendly and cool. It's practically unused, having only been used once on a business trip. There's almost no wear or dirt on the wheels. *There are some minor scuffs, but they don't affect usability. (See photos) I bought it because it seemed interesting, but I'm letting it go because I've moved to a department where I don't have business trips (tears). - Color: Black - Design: Simple and stylish - Functionality: Can be used as both a backpack and a carry-on. [Patent Pending] Patented retractable caster system allows for instant transformation between suitcase and backpack. [Ultra-lightweight 1.9kg] Carry-on size, half the weight of conventional suitcases, yet with a large 35L capacity. [Aesthetics of Subtraction] Minimalist design that blends into urban environments, stripped of unnecessary decorations and functions. *No returns accepted. Color...Black Features...Carry-on compatible