IMPORTANT AND MUST-READ: Please carefully read the capacity recommendations in the size chart! For travel, we recommend size Medium. For shipping or storage, we recommend purchasing the size that fits your item, preferably medium or large. XXXL and XXXXL sizes are particularly spacious; for example, the XXXL size can easily accommodate a 7.5-foot Christmas tree. The XXXXL size can accommodate a 9-foot Christmas tree. Premium Material: The storage duffle bag is made of high-quality strong 1680D Oxford cloth, thickened and widened webbing and two-way strong lockable zipper. Reinforced by precision stitching, it is a luggage bag that can be used for both travel and storage. Webbing reinforcement: The storage duffle bag uses two-way webbing reinforcement, horizontal webbing reinforcement, dispersed gravity points, and longitudinal webbing runs through the entire storage bag, which increases the load-bearing capacity and allows you to use it with confidence. Multi-purpose: Large-capacity storage duffle bags are suitable for moving, traveling, outdoor sports, outdoor camping, luggage storage, Christmas trees and holiday decorations storage. Foldable duffle bag: The portable storage duffle bag can be folded into a flat shape, which is convenient for storage when not in use and saves space. Suitable for storing clothes, large pillows, outdoor tables and chairs, tent bags, rug bags, cushion bags, pool bags, inflatable kayaks, strollers and folding bicycles.