Hellobee Boards

I haven't used either with the Uppa Baby Vista but I have used stroller blankets from from both. The 7am one is really warm-- spending tons of time outside in the winter could make it really worthwhile for you but I was only borrowing it so I can't speak to how well it holds up. JJ Cole bundle-me's are great, they wash and hold up really well but they certainly aren't as warm. I see that they have an arctic version now but there aren't any photos of how well the hood cinches down and it looks pretty bulky whereas the 7am compresses pretty well so you can sort of redistribute bulk. Also, you will probably need to buy 2 if you go with JJ Cole because of the sizing.

I hope that helps a little bit!