• 1680 Denier Ballistic Polyester construction. • Protective non-slip, non-scratch mounting base. • Expandable main compartment increases bag's storage capacity. • Top flap internal organizer and soft Tricot lining. • Hideaway backpack straps. • Internal removable shield tote. • Clear-Vu removable and replaceable snap map pocket. • Easy access, external eye glass case. • Media Center® personal media pocket. • 3M™ Scotchlite® reflective Cortech® logos. • Accomodates 35oz/1 liter hydration bladders (not included). • Built-in sip tube and headphone exit ports. • Integrated stowaway rain cover included. • Available in magnetic or strap mounting versions.