In addition to this one, we got the Organic Cotton & Camel Wool Winter Long Sleeve Legged Sleep Sack 3.5 TOG in Constellation and the Thicken Long Sleeves Split-leg Sleep Sack 2.5 TOG in Khaki, he’s currently alternating between the last two. At the moment, I prefer the style of the split-leg sleep sack because my baby is only 9 months old and can’t walk yet… so the split leg design allows him to move and crawl around easily. He’s a small baby and the 6-9 fits him perfectly. It keeps him warm all throughout the night, even his hands -tho out- are no longer cold when he’s up in the morning. I love it so much. I am finally sleeping guilt free knowing he’s definitely not getting cold at night. I’ve also washed it twice and it’s still good as new! Will definitely repurchase as he continues to grow! 🩵