[Perfect Fit] Waikas vacuum bags are compatible with iRobot Roomba models including i, s, and j series, a reliable and convenient replacement for iRobot Roomba i1+, i3+(3550), i4+, i6+, i7+, i7Plus, j7+(7550), i8+, and s9+ robot vacuums. [Reliable Dust Filtration] Made of ultra-fine melt-blown fiber filter layer and two layers of non-woven fabric, WAIKAS vacuum bags can collect 99% of dirt. Upgraded sealing technology and premium materials reduce the risk of leakage by 33%. WAIKAS high-quality i7 bag replacement parts load slowly and maintain suction power longer, effectively protecting your robot. [Great Value] 2-pack of non-woven vacuum bags, a great value. [Note] This is a compatible spare part, and the use of the iRobot Roomba brand name or model name for this product is solely for the purpose of demonstrating compatibility. WAIKAS is an independent brand. BB1①-77