Lightweight, portable and convenient: Designed for life on-the-go, these portable bags store baby bottles for easy feeding when out and about Compatible: Specially designed for Tommee Tippee bottles and to keep water warm until you’re ready to feed Handy adjustable strap: Easily attach the bottle bag to your changing bag or pram, so it’s always on hand when you need it Insulated: Store warm or cool bottles, so you've always got a feed ready to go at the right temperature Easy to clean: Simply wipe these waterproof bags to clean