simplehuman custom fit bin liners are designed to fit our bins perfectly so the bag stays completely hidden when the lid is closed. The custom fit means the liner fits tightly around the inner bucket and are available in a range of sizes to match your simplehuman bin, these liners are made from extra durable plastic with thick double seams to prevent rips and tears and convenient drawstring handles so they are easy to lift, tie and carry.simplehuman are happy to help so if you have any questions please contact customer services on 01491 875 974 between 9am and 5pm Mon-Fri or via the UK support page: www.simplehuman.co.uk/service. Thank you.