Quick Connect Valve System Makes filling and draining an easy task. Valmex Pro X Series Fat Sacs are constructed with a white water rafting material called Valmex. These sacs are unbelievably durable and no longer need the support of an outer shell. Daisy-Chain Integration Placement of valves makes it possible to daisy-chain the sacs to create the perfect integrated ballast system. Filled Weight 1000+ lbs. 54" x 54" x 12" Pro X Series Triangle, Open Bow Compatible -- 1000 lbs Capacity Fill the FatSac Ballast Bag to Transform your wake into a Wave, pair it with the