Designed for cruiser type motorcycles. Tapered to fit most cruiser tanks. Clear top screen (touch screen friendly) for maps, GPS or smart phone with gloves. Special zippers to help keep dirt out with lockable hi-density rubber zipper pulls for easy operation. Shape retention bag with reflective piping, lined interior and integrated rain cover in storage pouch. The protective base material helps prevent slipping or marking. Capacity 5 liters, 7 liters expanded. Approx. dimensions: 10" long x 8" wide x 4" high, and expanded 10" long x 8" wide x 6" high.