The Lowepro Pro Runner x450 Rolling AW Backpack (Black) is designed to carry and protect a Pro digital SLR camera with attached lens (up to 300mm f/2.8) plus 4-6 lenses or flash, accessories, up to 15.4" laptop, tripod or monopod and personal items. Laptop sleeve can hold most up to 15.4" laptops. It is made from weather-resistant 600 denier square rip-stop polyester with a padded interior plus removable, padded inserts-two large main dividers and eight adjustable subdividers. The pack has an All Weather AW Cover that protects the camera gear from the elements. It also has rain flap lids that cover the zippered closure and offer added weather protection. There is a Hideaway Tripod Mount with foldout holder that secures a compact tripod or monopod. The SlipLock attachment loops will allow the addition of optional accessories. The backpack is carried by a rubber grab handle, spring-loaded trolley handle, built-in premium wheels, or adjustable, thickly padded shoulder straps with 5 adjustment points.