Features of the Mountainsmith Cona 25 Pack Roll-top entry allows for expandable main compartment storage Water-proof compartment inside roll-top entry protects your gear and expands when you need more space Hidden webbing attachment points in pleats on sides and shoulder strap U-shaped rear entry zipper offers easy top-to-bottom access Laptop or hydration reservoir sleeve Zippered front pocket with internal zippered stretch mesh org pocket Comfy EVA shoulder straps Removable hipbelt 2 Small quick-access zippered top org. pockets Are ideal for small electronics, sunglasses and snacks 2mm PP frame Board Separated molded EVA foam backpanel and lumbar pads create a breezeway on your back