市场上最轻的可扩展（可拉伸）行李箱有哪些？

Ultra-light soft-shell carry-on made from 100% recycled polyester with 360° spinner wheels, an expander, front pocket, and a TSA combination lock. Suited for travellers who prioritise low luggage weight and eco-friendly materials on short trips or strict-weight airlines.

Lightweight softside carry-on with a tapered 2-inch expansion, ECOFAB recycled lining, Powerscope Lite handle and 360° spinner wheels. Suited for frequent travelers seeking low weight with organized packing for short to medium trips.

The Carry-On Flex is a hardshell, expandable carry-on with a wraparound zipper that adds extra packing space. It features Away's signature interior compression system, 360° spinner wheels and a TSA-approved combination lock, suited for travelers who want a durable, organized carry-on with occasional expandable capacity.

The Rimowa Essential Lite Cabin is an ultra-lightweight polycarbonate carry-on with a 37 L capacity, multiwheel® spinners, and TSA-approved locks-suited for short trips and travelers who prioritize low luggage weight. It's designed for easy maneuverability and meets most airline cabin-size requirements.

Hard-shell polycarbonate carry-on with 360° spinner wheels, a built-in weight indicator, and a 2 in expandable zipper (49 L expandable to 61 L). Suited for 3-7 day travelers who want a sturdy, organized carry-on with extra packing flexibility.

Lightweight hardside carry-on made from Samsonite's Roxkin material with smooth four-wheel spinners, integrated USB port, and an expandable zipper. Suited for frequent flyers who want a durable, light carry-on with tech conveniences and TSA-friendly security.