Bike saddle trunk bag

A huge seat-mounted pack for bikepacking and commuting - no rack required. Usable capacity between 800 cu in and 350 cu in. 800 cu in (13L) – 22x7x6.25. Can be compressed down to 350 cu in when full capacity not needed. Rigid hull inside front of bag for secure support even when bag isn’t full. Removable waterproof liner. Requires a gap between saddle rails and fender of at least 8". Does not require a bike rack.