The Tommee Tippee Closer to Nature Microwave Steam Steriliser is designed to kill viruses* and 99.9% of bacteria. Using the all-natural cleaning power of steam this steriliser kills 99.9% of harmful germs and household bacteria without harsh chemicals and leaves no nasty residue. Tiny tummies are delicate but they\'re easy to protect with the Tommee Tippee Closer to Nature Microwave Steam S iser. Viruses & bacteria don\'t stand a chance against the Steam S iser. The bottle s iser uses water to kill 99. 9% of harmful bacteria and viruses without chemicals for worry-free s ising. This Microwave S iser can clean up to 4 bottles in just 4 minutes using 100% natural steam, with no chemicals or residue. Based on 1000W microwave. Big enough to hold a generous selection of bottles and baby feeding accessories but compact enough to fit most home microwaves. The lid doubles up as a space-saving, s e surface to help you prepare your baby\'s bottles. Compact and lightweight, the Tommee Tippee Closer to Nature Microwave Steam S iser can easily be tr ted to protect their tiny tummy wherever you are. Tested against Coronavirus (tested to EN 16777) and Influenza H1N1.