Advanced Filtration System: Engineered with meltblown fibres and non-woven fabric, these Dust Bags capture up to 99.97% of fine particles, helping to maintain cleaner air while boosting the efficiency of your sweeping robot.|Secure Dust Containment: Innovative sealing design helps forestall dust leakage, keeping debris securely inside for a more hygienic home environment and reducing exposure to airborne particles.|Generous 3.5L Capacity: Larger volume works with automatic emptying stations, allowing cleaning-sessions of up to 40 days before replacement—minimizing maintenance interruptions.|Long Lasting Construction: Tear-resistant materials withstand regular use, offering reliable performance and consistent fit with your Sweeper Accessories for Rob-orock H50 Ultra, H60 Hub Ultra, H60 Hub Pro.|Easy Installation & Replacement: Simple fit-and-remove design makes swapping Accessories quick and hassle-free, saving time and keeping your sweeping robot ready for action.