This is a Pool Blaster Xtreme Multi-Layer Filter Bag by Water Tech. This filter bag fits the following cleaners: Pool Blaster Max HD, Max HD Li, Max CG Li, Millennium, Millennium Li, Centennial XL, Volt FX-8, Volt FX-8Li.
The Xtreme Multi-Layer bag is perfect for picking up algae. It is great for all debris including leaves and sand.
