When LO was smaller, we'd swaddle for all sleeping - naps and night. Now that it's getting cooler, we're sleep sack-ing at night. Do you sleep sack for naps too - or just nighttime. I worry about him getting cold for naps... but don't want to wake him to put his sleep sack on. He's quite the wiggleworm while sleeping, so not totally comfortable with putting a blanket over him for naps.