The favorite thing about using foam interfacing is that it is very easy to sew with and it makes bags look incredibly professional.
Foam stabilisers are great because they give your handmade bags body, stability and an overall professional finish.
How we avoid those creases. We use Shape-Flex iron to quilt cotton fabrics before we cut - gives our fabrics a more home decor weight and then a more professional looking finish. The first layer you fuse onto your bag fabric should be a WOVEN interfacing. (Shape-Flex) Woven interfacings are woven just like your bag fabric and will therefore MOVE with/the same way your bag fabric from all that usage. They are a MUST in bags, in my opinion to eradicate that bubbling and separation.
BOSAL IN-R-FORM PLUS UNIQUE FUSIBLE FOAM Double sided fusible foam laminated to napped tricot, soft and formable, easy to stitch, and needle friendly BYANNIE’S SOFT AND STABLE - First on the Market! Give a professional finish to bags and other projects with this great product. It has many features that make it superior to other battings and stabilizers including being soft comfortable lightweight and easy to sew. It also has great lasting body and stability that maintains its shape. PELLON FLEX-FOAM FF-77 - New Release! October 2015 - rave reviews! 100% Polyester lightweight foam stabilizer, sewing machine safe, machine wash warm on gentle cycle, tumble dry low or dry clean.