Patagonia Black Hole MLC Pack 45L is a travel-ready 45L carry-on backpack that converts between backpack, shoulder bag and duffel. It’s designed for organized travel with a padded laptop compartment and multiple internal organizers. Key attributes: Black | Nero | Polyester ripstop | Water-resistant | TPU-film laminate for added weather resistance | Meets most airline carry-on size requirements | Padded laptop sleeve (fits up to 15") | Multiple internal organizer pockets | Three carrying options: backpack, shoulder bag, duffel | Padded waist belt converts to single-shoulder strap | Rear sleeve for trolley handle attachment | Top carry handle | Full-length clamshell opening | Drop-in top pocket | Two interior organization pockets | Stowable hip belt | Dimensions & fit: Height: 56 cm | Width: 37 cm | Depth: 19 cm | Capacity: 45 L | Composition & care: 100% postconsumer polyester (body, 8.7-oz 300-denier ripstop) | 100% postindustrial TPU-film laminate (body laminate) | 100% polyester (lining, 3-oz 200-denier plain weave with PU coating) | 100% polyester airmesh (shoulder straps and hip belt) | 100% nylon (webbing) | Machine wash warm, do not bleach, tumble dry low, cool iron