Product Description The fabric material used in the reusable dust collection bag is made of high-strength multi-layer polyester non-woven fabric. The inner layer has a microfleece inner membrane and non-stick fabric, which is not easy to adhere to dust and is easy to clean. This filter bag is designed to vacuum dry dirt, wood chips, sawdust and other general debris. If used primarily for concrete and drywall dust, the lifespan of the bag will be significantly reduced. This reusable dust bag can replace up to 500 disposable filter bags. This filter bag will save you a ton of money.