Patagonia Black Hole MLC Pack 45L is a durable, weather-resistant travel backpack designed for carry-on travel and flexible carrying. It combines a 45L main compartment with multiple organizers and convertible straps for backpack, shoulder-bag or duffel use. Key attributes: Brown | Barry Fig | Ripstop polyester | Water-resistant | Weather-resistant | Durable fabric | Carry-on compatible (45L) | Padded laptop compartment | Multiple internal organizer pockets | Three carrying modes: backpack, shoulder bag, duffel with tuck-away straps | Padded stowable hip belt that converts to a shoulder strap | Rear sleeve for trolley handle attachment | Top-loading main compartment with interior organization pockets | Drop-in top pocket | External lash points | Wide back-panel webbing haul handle | Zippered laptop carrier that lies flat for TSA access | Dimensions & fit: Height: 56 cm | Width: 37 cm | Depth: 19 cm | One size | Composition & care: Body: 300-denier polyester ripstop with TPU-film laminate | Lining: 200-denier polyester plain weave with PU coating | Shoulder straps and hip belt: polyester airmesh | Webbing: nylon | Machine wash warm. Do not bleach. Tumble dry low. Cool iron.