Timberline Collection - Roll Top Backpack.  Features

Hydration reservoir pocket and tube port

Dual, mesh, water bottle pockets

Hook and loop secured rolling top with compression strap

Padded back panel with aero-spacer mesh for climate control

Padded S-shaped shoulder straps and adjustable waist and sternum straps

Large inside compartment and multiple packets for storage

A Polyethylene back sheet provides stability to bag