I was very happy with my Phil & Teds, and am now lending it to a friend who is expecting her third child very soon - she will then have a 4, 2 and 0 year-old. I never had the Cocoon because my baby was born in the summer and thought it would be too hot. My question is, has anyone used the Cocoon and if so, would you recommend it for a winter baby? If it was useful, then I would get it for her.