The fabric is sturdy for its intended use (swaddles and baby wraps), but adding a layer of bating and backing would totally destroy the soft hand of the fabric. It really isn’t woven very tightly, and I would never use it in a quilt. As for durability, my daughter used the things I made her for 6 months, washing frequently, and it held up well. Make sure you use either a serger or a French seam on it for clothing. I would be nervous about the seam unraveling without those techniques.