Review on Halo Sleepsack Micro-Fleece Wearable Blanket - Elephant Texture in Grey, Size Large by Mike Griffin

Works great! We keep our house pretty cold at 66-68F. My little guy is 4 months old but is in the 95th percentile and I needed a new sleeping option for him, much bigger. He loves to sleep stretched out like a starfish so I needed a bag with more legroom but not too bulky. He wears a long-sleeved cotton t-shirt and a halo fleece sleeping bag over it. Keeps him warm, the reverse zip is good and the fleece is very soft even after a dozen washes. He's 27 inches long and 18 pounds and the big one fits him perfectly and should last a while before he outgrows him - then I'll just buy the XL!