The Ronix Eight.3 Telescoping Ballast Bag - 800 lbs Smoke Carbon is designed for maximum efficiency and stability on the water. This ballast bag simplifies your boating setup with its telescoping chamber and TiZip waterproof zipper, ensuring a quick and secure fill every time. Constructed from 26 gauge heavy duty PVC materials with high strength sonic welded seams, it's built to withstand the rigors of boating while providing a smoother ride.