I use flannel sheets for backing quilts when I want to use flannel. I have bought the Cuddle Duds brand from Kohls usually on clearance and with a 30% off coupon you can get a set of sheets for a really good price. My last purchase was a set of twin, full, and king, all three for about $80. Could not even buy yardage for that price. I do pre-wash them but they stitch up beautifully and I have had no problems with them pilling.