The Watershed Mississippi dry duffel is the largest duffel Watershed offers. The Mississippi is an expanded version of their Colorado duffel (offering 33 more liters), making it optimal for any such purpose where ample storage space is required. Watershed engineers the premier dry bag on the market. Their ZipDry Seal technology can boast of an unprecedented, airtight seal that is guaranteed to keep gear dry even in the most extreme whitewater scenarios. All Watershed seams are radio frequency welded, a method, which has been proven to create a powerful hermetic seal. Constructed with 420-denier fabric with a heavy matte polyurethane finish for abrasion resistance and overall durability.