Watershed duffel liners are constructed from a 200 denier nylon exterior and velcro receivable fleece interior surrounding 1/2″ closed-cell foam. They offer a tight fit inside the bags for which they are offered. This liner has handles and inner walls designed to work with the Chattooga divider set. The Chattooga Liner and Divider set combo are a photographers dream! They have already been extensively tested by our Team Watershed members and are working out perfectly with HD cameras, video cameras, as well as digital SLRs. These are great accessories to add to your current line up of Watershed products.