I have used cotton flannel on the back for added warmth. I have sewn and "X" on each block so when they are washed the batting won't shift.
I make all my rag quilts with cotton batting in the middle
(not flannel) for added warmth and each seam (bloom) is hand snipped (not
machine cut). This is a very labor involved process, but if I am going to do
them I want good quality.
I will be shipping it USPS Priority Mail