Hi ladies, just wanted to say that I was going to use the bags but then at the chemist I found Avent "VIA" products. Basically they are containers that you can express straight into using your Avent breast pump and attaching an adaptor onto it. Then when it's done you can label them and pop them straight in the freezer. I've been using them for the last couple of days and for me it's a lot easier to store in the freezer because the containers are stackable. I also prefer it because it means that at day care they just need to attach the teat onto it and it's ready to go (in my head that means less handling and less contamination).

The containers double up for when bub starts eating solids too, so I know I'll get a lot more use out of them. They come sterilised and ready to go!