This is a TPU vinyl like most of my products, this component makes it pliable and sturdy for bag making. Use your Teflon foot and a Microtex needle. You MAY want to play with a scrap first to test your specific machine. If you have trouble turning right sides out, use a blow dryer to warm the vinyl and then turn out. 12 gauge vinyl is 0.35mm thick, 12″ x 52″.