Surprisingly thick - almost too much for the PJ pants I made, but beautiful just the same. The reverse side of shows a different pattern, which was a cool surprise. I would definitely use it again.
I was surprised at how thick and luxurious this flannel is. I bought it to make PJ pants for my kids (which I did) and it is borderline TOO thick, however with a few washings now it has thinned out a bit and I'm sure it will continue to do so for some time. It is really nice flannel, very cozy and warm and beautifully made. I will order some more for lining jackets etc.