I know many quilters poo poo polyester batting but I really like it . I've never used anything else for a quilt and would happily use it for a jacket. Its lightweight, warm easy to quilt and washes really well with no shrinkage worry. The one I use is Soft and Bright (£7.90 /m in Empress Mills, less if you have more than 1 metre) I did once use some Hobbs polyester batting but found it patchy in its thickness so have stuck with Soft and Bright.