Black Shell Backpack Nautilus. Strap yourself into the dynamic beauty of the black shell backpack engineered by elite bag designers. Featuring a striking shell frame with beautiful, overlapping layers that fan out around a single axis. Designed with adjustable shoulder straps and skinny top handle. Black shell backpack includes gold hardware with snap closure and top buckle detail. An ultra exclusive shell construction made with the finest leather craftsmanship in black genuine leather. Interior includes single lined pocket recommended for small electronics, such as iPads and tablets. Shell backpacks are the ultimate investment piece to add to your bag collection. Take on the exotic flair of the black shell backpack.