What bits do I need to buy to turn babyzen yoyo 6+ into the newborn version?

[BettyBi0]

I'm looking on eBay but all the various combos of bits is really confusing!

Is it a bit weird without the footmuff?

[itsmeyouknow]

You need the nest pack. My LO actually loved being in it without the footmuff on holiday as she could lie flat but see around her.