Having twins means you’ll end up carrying a lot of stuff! When we venture out with our twins we’ll generally carry multiple nappies, wipes, changes of clothes, diaper rash cream, pre-made milk and that’s not even including the things we carry for ourselves!
For this reason, we recommend investing in a big and sturdy diaper bag. It’s best to carry something that’s a bit bigger than your needs as this will avoid the bag bursting at the seams and also give you the option of being able to carry more things (like toys) when needed.