The Shop-Vac Back Pack Collection Filter Bags are available in packs of 5 and have been engineered to fit the Shop-Vac Back Pack Vacuum. These compact bags have been designed to provide comprehensive particle filtration through the use of a specially-designed lining, resulting in a longer life for your vacuums motor. These high-quality filter bags feature a durable construction and are designed to be easily disposable. Designed for dry pickup only.