could a Phil and Ted's Cocoon be used in a Mac XLR?

[afroomberg]

I am trying to figure out a way to make my Mac XLR, in the reclined flat position, to be more cozy for a newborn.

[nfowife]

I used a bowron strollerfleece in my Peg atlantico, Peg Tender Twin, phil and ted's, and baby jogger double with my DS when he was a newborn (well, in the PT it was more of when he was 3.5 months old and starting to use the doubles seat in the back and needed a little more support still). It worked great and made him really comfy!