Topeak wedge sidekick saddle bagtopeak make innovative new products and time tested favorites all designed with one thing in mind making the ride and life the best it can be features large side opening molded panel provides complete access to contentssemi rigid design holds its shape well and is weather resistantquickclick mount with seatpost strap for stability medium3m reflective strip and redlite mount for increased night time visibilityspecificationscapacity05 l30 ci small