Kriega OS-Combo 36 Drypack SystemThe OS36 Combo Kit includes anOS-Base plus a set ofOverlander-S OS18 Drypacks. This combined capacity of 36 liters is perfect for toting tools and supplies on the back of a lightweight dual sport or enduro. The OS-Base is compatible with just about any dirtbike and, after the initial setup, affixes to your bike in just a few seconds.The Overlander-S OS18 bags are roll-top, 100% waterproof packs featuring semi-rigid walls for easy loading and shape retention.Features: Waterproofing: roll top closures w/ taped-seam waterproof liners 36 liter carrying capacity with center pack mounting option Heavy-duty Hypalon construction Quick and easy to take on and off Reinforced stitching at all stress points Aircraft grade alloy hooks Non-slip cam buckles (2) OS-Rack loops included (2)Overlander-S OS18Drypacks included: 100% waterproof construction Semi-rigid wall panels retain shape when empty Ultra-abrasion resistant Hypalon strapping 1000D Cordura nylon body construction 18 liter capacity 38cm L x 25cm W x 19cm H (14.9" H x 9.8" W x 7.5" H) 10-year warranty Note:If the base or any luggage contacts the silencer, an aftermarket heat shield must be installed to prevent damage.