Zipsak Boost! Underseater Expands To Carry-On

Durable and water resistant nylon fabric Rear trolley sleeve, allows you to slide the bag over the trolley handle of a suitcase 4 multi-directional spinner wheels 3 exterior zippered pockets, and two interior mesh zippered pockets The carry-on can be wheeled or carried using its adjustable cushioned shoulder strap. This listing is for ONE zipsack only: Black