So we use the halo sleep sack cause supposedly it's the most recommended in anti sids sleeping my baby loves it cause it keeps his feet lose and hugs his middle and his arms are able to be free. He does not like his arms or hands to be tied down or contained. I get worried though cause when he wakes up for his feeding his hands are always total ice. We keep our house at 68 degrees and the rest of him is always at a good temp I just don't know how to keep his little hands warm without containing his arms