For those of you who wore your newborn a lot out and about in the summer, how do you protect them from the sun without overheating them? We are doing a lot outside right now with O to keep us all sane, and baby (4 weeks) is coming along. I've been using the ergo when it's warm because it seems cooler than a wrap, but then her legs and arms are exposed even with the sun shade over her head. Is there an easy way to protect her from the sun without baking her (and me?)