This sleep sack has been perfect for our little one. He was pretty tiny and we had trouble finding a sleep sack that he could actually wear and wouldn't ride up over his face. He Hated having his arms swaddled from 1 week old so this was nice as you have the option of leaving the arms out. The small sizing for newborn actually fit him once he reached 6lbs, we tried 3 other sleep sack brands that were labeled newborn but we're still massive.
Very soft material, washes well and breathable. Will be getting another one!