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. All liners have a zippered top, buckles on each end for compression, handles, and velcro-receivable inner walls designed to work with the Ocoee Divider set. The Ocoee 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.