Thule Pack-n-Pedal Commuter Backpack Waterproof main compartment with roll top closure keeps contents dry Hideaway high visibility rain cover with reflective screen print for increased bag protection Hideaway helmet attachment system securely holds your helmet when not in usehelmet when not in use Padded, removable 15" laptop compartment with tablet sleeve sits on top of bag rather than flat against the cyclist back for greater comfort 360 degree reflective screen print increases visibility from all angles