We like to describe them as a duffel bag with legs -- a simple way to add capacity without requiring side racks. Beta Bags hug the bike via the seat channel, yet stay clear of the exhaust (on most bikes). The bags solidly mount by three quick release straps, one around the rear of the bike, the front each to a passenger peg/bracket or sub-frame. Add more carrying capacity by attaching a Beta Duffel. We've further refined our classic design for 2011. We gave the bags a Full access Crescent top zipper opening for full access to the contents. We added our Tough-Tek non-skid/non-scratch material to the bottom (the same material we use on our Tank & Tail Bags.) Silver interior accents for better interior visibility. We' ve enhanced the overall shape. Plus we've designed new and improved raincovers -- one for the bag and one for the Beta Duffel. We kept the ever so useful side pockets, Carry Handle, Duffel Mounts and the 4 outside compression straps, and the ultra-durable Ballistic Fabric Body.

Beta Plus Rear Bag The legs hang down from the seat: 5" Dimensions: Overall Width: 29" (Body: 24" Pockets each: 2 1/2") Height(from top of seat): 9 1/2" Length: 11" Seat Channel: Top: 10" Bottom:14" Capacity: 45 Liters, 2750 cu.in.

MIni Beta Plus Rear Bag The legs hang down from the seat: 4 1/2" Dimensions: Overall Width: 25" (Body: 20" Pockets each: 2 1/2") Height(from top of seat): 9 1/2" Length: 11" Seat Channel: Top: 8" Bottom:11 1/2" Capacity: 35 Liters, 2135 cu.in.