Our medium expandable upright uses fully customizable cx technology to expand up to 25-percent, then compresses itself back down to original size to prevent your contents from shifting during transit, great for 3-6 day trips * Ballistic nylon outer fabric resists wear, moisture, dirt and abrasion, hybrid fiberglass frame is lightweight and provides flexibility, durability and shape retention * Outsider handle provides greater interior capacity and a flat interior surface for packing so clothing arrives wrinkle-free, aircraft-grade aluminum handle system with 4 stop heights * V-groove handle tubes are stronger and guarantee less jamming, outsider pocket for convenient storage of quick-access items, tethered smartlink strap transports two or more bags as one * Self-repairing ykk zippers for smooth zipper action with lockable double zipper pulls, large u-zip front pocket for hassle-free access to extra items, speedthru pocket for storage of items at security checkpoints