We keep our house warmer in the summer (70s) so I'm looking for a light sleep sack for our almost 1 year old. We've been using the 100% cotton Halo sleep sack and it's been fine, but I want to get a backup and am wondering if there are any other good summer weight sleep sacks out there? I've heard good things about the Gro Bag and Baby Deedee but I'm not sure if those would be better for the winter. Thanks mamas!