I normally use fleece jackets, but sometimes it gets really cold and I'd like to be able to use a jacket with fleece and nylon, like the squall jackets from lands end, especially for my forward facing 4 year old who doesn't get to ride in a stroller bag. Even though they don't compress in the same way as puffy jackets, I worry about the bulk. Anyone else in this predicament? What do the experts say? (And just in case this is a really bad idea I feel I should say - Don't worry, I'm currently still using the fleece. I don't want to worry anyone.) Thanks! Happy New Year!