WOTOW Tactical Shoulder Bag, Military Molle Crossbody Sling Daypack Laptop Outdoor Commuter Backpack for Hunting Camping Riding Trekking Travelling Large Capacity ---capacityoverall about55L with total of 4 compartments, can be used as 3-Day Assault Pack; main compartment dimensions approx: 22.8"x12.9"x6.3"(Height*Width*Depth) which can fits 17" laptop. Comfortable Design --- mesh ventilated padded back panel with Velcro top closurefor extra comfort and maximum airflow; adjustable contoured padded shoulder straps with adjustable detachable waist strap and sternum strap for extremelyrelease heavy load and practical. AdaptableMolle Webbing --- Molle webbing throughout for attaching additional pouches or gear, such as cell phone bag, water bottle bag, saddlebag, and accessory kit bag etc; which can extremely expand space. Super Durability --- made of very strong military specification nylon material and reinforced stitching throughout where would tear over time; PVC coatedLining makes it semi-waterproofto ensure the strength in wet environments, or get rid of rot after the invasion of water. Varied Application --- can be used as BOB, daypack, or travel pack. Great choice for outdoor activities: camping, hiking, trekking, traveling, etc; suitable for man and woman.