Style-vil is a volume liner, specially designed for bags that need to keep their shape but still remain supple. Similar to byAnnie's Soft & Stable. Price per 10cm, with a minimum order of 20cm.

The foam is about 4mm thick but compresses very well so it passes under any sewing machine without much effort.  

This 'fix' version has a thermo-glue layer on one side. This makes you even more flexible!

Either you choose to avoid thick seams, and reinforce the outer fabric excluding the seam value by ironing it on. Or you iron the style-vil (excluding seam value) onto the lining fabric.

Tip: The best result, however, will be achieved by sewing the foam with the side without adhesive with a zigzag or overlock stitch in the seam value of your outer fabric, just like you would do with the well-known sew-in variant. Once your bag is assembled, you can press the lining onto the style-vil. The outer fabric can then move over the style-vil without creating wrinkles, and inside you have a nice 'tight' result.