Holy crap, this thing is so soft... I have several types of sleep sacks (Halo, Adin & Anais, Summer Infant, etc), but this is by far our favorite.  It has a higher TOG rating than the others, which I appreciate for winter (our temps overnight inside dip to about 64).  The 6-12 month size is very accurate (our 9 month old fits perfectly and I see no reason she will outgrow it before it warms up).  I like the fact that the zipper can be done from the top (good for getting her in it) and the bottom (good for middle of the night diaper changes) as well as the fact that both are covered by a soft snap tab (so little fingers don't unzip it or have a zipper rubbing against sensitive skin).  The color is muted and gender neutral.  Everything about this is great... right down to the satin piping on the edges.  Really, I couldn't think of a way to improve it!  My husband literally exclaimed that he wishes he could have one the first time he saw/held it... it's that soft and cozy.