Shape Shifter. This revolutionary breakthrough in backpack design expands and contracts to fit your equipment. Vendor Part # TT470

Outer Dimensions When Expanded: 20H x 12.5W x 7D (51.0 x 32.0 x 18.0 cm), Outer Dimensions When Compressed: 20H x 12.5W x 3D (51.0 x 32.0 x 8.0 cm), Laptop Compartment Inner Dimensions: 19H x 12W x 1.5D (48.0 x 30.5 x 4.0cm), Weight: 3.75 lbs (1.73 kg), No Rhetoric Warranty Policy, Exterior - All fabric exterior treated with a durable water repellent treatment (DWR) while fabric underside is coated with polyurethane (PU) for superior water resistance, YKK RC Fuse (abrasion resistant) zippers, 1680D ballistic nylon, 420D velocity nylon, 3D air mesh, ultra stretch pockets, Rock Lockster buckles, nickel plated metal hardware, nylon webbing, 3-ply bonded nylon thread, Interior - Neoprene gear pockets, 210D silver-toned nylon, 2x PU coated nylon 210T seam-sealed taffeta rain cover, nylon mesh pockets, closed cell foam, 3-ply bonded nylon thread.