People who gave this one star for it being too thin must not know about the tog rating system. It's exactly what I think a .5 tog sleep sack should be, like sleeping with a sheet, perfect for the warmer nights. A lot of the one stars also said the head hole was too big, I didn't find this true for us, just had to wait until my little one was the right size. It is nice and long so they can wear it for a long time as they grow. The arm holes are also nice and roomy, making it easy to put on. I didSee full review