I live in Scotland and it's winter - I need a changing bag that can handle really wet weather without everything getting wet inside. Any suggestions? It's not that I'd set out in terrible weather but it changes so fast this time of year that you can set out in bright sunshine and get a downpour the next minute. I put my current changing bag (a babymoov) in the basket below and it was still saturated. I need a replacement ASAP!