The "Shoulder" shoe is a highly specialized shoe designed for WTO sleeve rolling and shoulder seams of the product. It is used when sewing outerwear, when the coat should be especially clear and accurate. The space under the platform allows you to fix the sleeve without burning your hands. It is convenient to use such block for specification of landing of a sleeve before drilling in an armhole. Well, if such a pad has different diameters on both sides (one larger, the other smaller), it makes it possible to hold the WTO for both adult and children's clothing.
 If you sew often and many of the products are shoulder (blouses, jackets, coats, etc.), and especially from complex fabrics (silk, chiffon, "dry" fabrics that are poorly amenable to wet heat treatment), then you should to her to think. ⠀
 The pad will help: iron out the landing on the back of the sleeve; iron the sleeves and the shoulder area on the shelf and back. Thanks to it the product will not wrinkle in other places; iron the seam allowance on the sleeve after drilling; in the final wet-heat treatment of the sleeve by steam.