These are mostly cotton but it seems like the warp threads are poly. It still dyes nicely, is barely noticeable, and is probably fine. Since "probably fine" doesn't work for our rigorous standards, we've decided to drop the price and get these away from our precious.
Soft brushed woven Cotton flannel blanket for babies. Measures ~28" x 40". Nice soft cozy flannel rectangles, flat serge all around with cotton thread for dyeing. Handy to throw over the shoulder for those day long baby burping sessions. Tie-dye it and give baby something to look at on your shoulder while you pat away on baby's back!
All around functional summer blanket for the teeny munchkins. The cotton will breathe even if you bundle baby up, which the polar fleece synthetic blankets out there don't do (synthetics don't breathe).
Made in: CHINA (CN)