Swiss Gear 18.5" Rolling Computer Backpack 38 L Trolley Laptop Backpack (Black) PRODUCT DESCRIPTION The SIWSSGEAR 18.5” Rolling Convertible Backpack is adaptable to any terrain giving you the option to carry belongings on your shoulders or roll along on wheels. With an average packing capacity of 3-5 days, this lightweight luggage is a go-to carry-on for short getaways. The specially contoured shoulder strap system tucks away in a padded zip pocket. Interior features a large zippered mesh pocket, a divider panel, detachable wet pouch, and clothing tie down straps to keep items secure during transport. Two exterior zippered pockets keep accessories within reach. Made of durable 840D dobby polyester fabric.