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 extra-large storage duffel bag is made of thick and durable PE material, which is tear-proof and waterproof, and the overall edges are reinforced. The handle is made of widened and thickened webbing. Double zipper large opening: The large opening design is convenient for taking items, and the double zipper is sturdy and smooth, making it more convenient for you to use. 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, tent bags, rug bags, cushion bags, pool bags, inflatable kayaks. Extra Large Storage Bags