"Mobilon" is a trademark that became a trade name. Here is what the term means, what the tape is made of, and why the name is a poor substitute for a specification.

Quotes for TPU elastic tape arrive in kilograms, metres, yards, rolls or square metres — sometimes from the same supplier.

Clear elastic skips stitches and birdsnests because it is an elastomeric tape, not a woven one. It grips the needle, flexes under the presser foot and adds bulk at the seam line, so the fabric feeds unevenly. Three things fix most cases: attach the tape with a serger instead of a straight stitch, switch to a longer and wider stitch if you must topstitch, and never stitch the same line of tape twice.

Without an effective load‑distribution mechanism, the stitches in these areas gradually elongate, causing necklines to droop, shoulder lines to sag, and cuffs to deform. A well‑fitting garment loses its intended shape after just a few wears. The core function of TPU elastic tape lies in redistributing these stresses through material mechanics.