This Telescope bag is constructed from 60-gauge heavy-duty PVC materials for the utmost in durability. Sonic welded seams and fill drain ports ensure it withstands long-lasting use. The Telecope bag includes one 1-1/2" diameter fill port, one 1" diameter fill/vent port, and two 1" diameter drain ports. Bag must be filled using Eight.3 ballast pumps from Ronix. 54"L x 54"W x 27"H. Sonic welded seams Ideal for creating your perfect wake | Ronix Eight.3 Telescope Pickle Fork Shape Ballast Bag, 950 lbs