Peak Design Travel Backpack Black BTR-45L, Sage Product Highlights Versatile, Multi-Configuration BackpackSpacious, Expandable from 30L to 45LDesigned for Internal Compartment SystemCompartments for Gear, ClothesRear, Front, and Side Access15″ Laptop and 10″ Tablet PocketsHidden Side Pockets, Front PocketOrganizational Pockets2 Bottle Pockets/Tripod, Monopod Holders4 Exterior Handles, Weather Resistant DescriptionREIMAGINED ORGANIZATIONFront organizational panel four-zippered mesh pockets for small and flat items. Rigid sidewalls and full-back panel load for organized packing. Zippered dividing panel separates bag into two compartments or merge into one. IMPRESSIVE CAPACITYMeets international max carry-on standards in default 35L configuration.Dual expansion zips give 10L extra volume for 45L max storage. Compression snaps reduce bag to 30L for use as a day bag. Dual external carry straps stowe away in magnetic external pouch. Expand the side pockets to store water bottles, tripods. DUAL SIDE ACCESSDual side zippers for instant camera and item access. POCKETS FOR DAYSTop and side soft-lined, zippered stash pockets conveniently stash items. LAPTOP CARRYQuick tablet and laptop access using the main back zip. PERFECT FORMPerfect Form: Our bag holds its shape and sits upright, packed or empty. SYNCS WITH ACCESSORIESCamera cubes, sold separately, fit snugly inside. Complete access of photography, drone, or video gear. UNPARALLELED PROTECTION400D weatherproof material. 100% recycled nylon canvas shell and DWR impregnated, PU-coated interior equals zero rainwater. Oversized #10 front and #8 back zippers are weatherproof and lockable. Rugged 900D weatherproof bottom liner. Ultra-light padded foam provides security, structure, and aesthetic cleanliness throughout. Protected luggage tag holder included.