Update, the first prototype was knotted to determine correct size. Smiles from the kids made it worth the effort. Now I need to figure out how to provide adjustments that will not adhere to other types of fabric (like the hook part of velcro), or add bulk. My student's is stitched up and ready for class. I have staff and parents waiting in line for a fitting for their child's "hug-wrap". Prayers for wisdom and guidance would sure be appreciated!