- High-Quality Waterproof Material: Constructed from lightweight, scratch-resistant polyester, this travel duffel bag features a waterproof lining, ensuring your belongings stay protected in any weather. - Exceptional Mobility: Equipped with four removable, 360-degree rotating wheels, the duffel glides effortlessly over various surfaces, making it easy to navigate through crowded airports, train stations, or busy streets. - Adjustable Storage Capacity: The bag has an original size of 15.7 x 8.6 x 12.6 inches, with the capability to expand vertically to 19.3 inches and increase in volume from 28L to 58L. Easily customize your storage space to fit your needs by opening or closing the zippers. - Durable Design: A robust metal zipper and a sturdy base provide long-lasting durability while facilitating easy access to your items. The bag’s construction is designed to withstand the rigors of travel, ensuring it remains a reliable companion for years to come. - Versatile Use Cases: Ideal for weekend getaways, sports activities, shopping trips, or camping, this bag serves multiple purposes. It can be used as a night bag, travel sports bag, or expandable luggage, making it an essential accessory for any traveler. - Perfect Travel Companion: Spacious enough for basic clothing, electronic devices, shoes, and toiletries, this bag is optimally designed for trips lasting 5-7 days. For any questions or issues regarding the product, please contact us for support.