FatSac V-Drive 400 lbs. Wake Surf Ballast Bag The FatSac Pro X Series V-Drive Wake Surf Ballast Bag fits perfectly in the compartment of your v-drive boat to produce a nice wake for surfing. Try combining this sac with the Pro X Series Fat Brick to help you control the shape of your wake. Will also conform to fit in other places and in other type boats. Dimensions 42 L x 16 H x 16 W Color Gray California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Pro