High Sierra A.T. Ultimate Access Carry-On Wheeled Backpack with Removable Day Pack Blue Meets airline carry-on size requirements with front day pack removed. It's three bags in one! Use it as a wheeled bag, a backpack or as a day pack. Large main compartment with book-style opening and interior clothing hold-down straps. Hidden backpack straps are stored behind the zippered padded back panel on the main compartment. Oversized, skate-style wheels are inset into corner-mounted wheel housings. Locking, telescoping handle is protected with zippered cover when not in use. Removable front day pack, with zippered accessory pocket, dual side water bottle pockets, organizer and headphone access port, has a back strap to allow the pack to slip over the extended handle of the main bag. Adjustable exterior compression straps help compress and secure gear. Adjustable tow strap to attach additional gear. Reflective piping for added safety.