These are my first ever online clothing order...very pleased.  The fabric is imho a medium weight, exactly as I expected for flannel pajama pants.  A nice touch, I didn't notice before ordering, is the drawstring tie is a polyester satin instead of a shoelace-type string.  I ordered a large because I like my loungewear to have a looser fit.  I usually wear medium size (hips 37 inches), and these are perfectly roomy for me.  Came back to order another pair, but the blue is sold out!  Will definitely check back for more.  Shipping was quick, product as described, price excellent...what more do ya want?

UPDATE July 2012:  Checked back, these had come back in stock, so I ordered another pair.  Still very pleased with these pants.  The quality was the same, shipping the same, price the same.  I would definitely buy these again.  These are perfect for a little "anytime" gift for a friend who likes cozy casual wear.

UPDATE December 2012:  Toasty!  It's cold here now and these are very comfy and warm.  Have washed and dried them many times and they haven't shrunk or faded.  Very pleased.

UPDATE November 2014: Still yummy!  They have faded from washing (cold/delicate), but the seams, hems, waistbands are still solid.  Excellent value.