Magic Bags?

We have used sleep bags for both girls since we're crazy freaks about putting blankets or anything potentially hazardous in their cribs. I love the sleep bags. They act like a blanket & keep them warm without the risk of suffocation. I had always just bought the less expensive Carter's bags. Well, KidsWoot had the Halo Sleep Sacks so I bought a couple. I think they are magic bags. Hailey sleeps all night when she wears them and then if I put it back on her for morning nap, it seems to be an extra long nap those days.  Neither girl did this in the other brand bags.  Again, I say, magic bags.