FATSAC Mega Fill Weighted Bag 2.0 [M1050]Mega Fill Weighted Bag 2. 0 Use these 50lb weighted bags to help fine tune your wake. Bags can be added throughout the boat where a little more weight is needed to really get that perfect wake. Features: Any material can be used to fill the Sac such as water, rocks, sand, and metal slugs Fillable Sac weighs 50 pounds when filled with water Can be filled with the supa pump or by submerging in the water Highest Quality HeyTex layered materials Double