This is one product I wished existed a year ago, I can’t even count how many times I spilt my milk transferring from bag to bottle (and the tears I wasted because of it lol) – this new express and go system by Tomee Tipee, looks pretty awesome, and won’t burn a hole in your pocket either. (I always recommend buying stuff like this once you’ve had the baby and are a few weeks in and know you’ll use it)
Information:

?? The pictured is £49.99 from Mothercare, and comes with 20 bags that will attach to most expressers, then lids and teats that fit straight onto the bag. (Ideal when you start feeding from the 4/6 week Mark), it also comes with a storage box that can pop straight into your fridge/freezer. And the best part a water heater, that will heat your milk/bottles from fridge or even frozen. The items are sold individually too and personally aren’t that expensive.Worth looking into if you’re considering expressing.