Capacity: DSLR (up to pro size w/grip) with 3-4 lenses (up to attached 70-200mm 2.8), flash and accessories. The Cooper 15 was built to accommodate a DSLR with 3-4 lenses (up to 70-200mm 2.8). The rear padded sleeve will hold a laptop up to 15 inches. There are tons of other reasons to love this amazing bag. Click over to the "Features" tab to learn more.