Washable filter for use in BISSELL® Crosswave® X7 series 3011, 3279, 3055, 3276, 3277. Hand wash with mild detergent and let air dry. For best performance, use only genuine BISSELL® replacement filters. BISSELL proudly supports BISSELL Pet Foundation® and its mission to help save homeless pets. When you buy a BISSELL product, you help save pets, too. We’re proud to design products that help make pet messes, odors and pet homelessness disappear.