Gregory Border 50 + 15 Backpack | Travel Backpack from Gregory | WEARABILITYAir-Cushion mesh breathable back panel for maximum breathability on long travel daysPerimeter frame support with padded hipbelt and zip-on cover for protection while checking the split case3+" of adjustable torso length with padded shoulder straps with sternum strap with integrated safety whistlePOCKETS, ACCESS, & HELPFUL ATTACHMENTS2-in-1 system with a detachable 15L daypack and a 50L large split case backpack50 liter large pack features split-case, luggage-style access with a padded, protected front panelQuick-Track attachment system to easily slide daypack on and off the large pack with a secure aluminum hookDaypack includes dual stretch mesh side pockets and a gusseted opening for easy access to the padded laptop sleeve that can fit up to a 15"Top zippered quick access pocket on daypack with large main volume to hold all your travel essentialsFront molded grab handles for secure, easy handlingInterior zippered pocketing with transparent mesh for easy visibility into your packed itemsIntegrated AirTag holder to easily track your luggage (Air Tag not included)