Top bangle is not Shultz but a vintage laminated bangle of tortoise and marbled lemon yellow bakelite bangle measures just over 5/8" wide X 2 1/2" wrist opening X 1/4" wall thickness.
You can see in the photo there is a long section of scuffing on this bangle which looks more like an imperfection in the stock or else it's been polished over since it's rather smooth. Still quite an attractive bangle but price reflects the imperfection.
Middle bangle is Shultz marbled rootbeer bakelite with 8 small oval dots in marbled pale yellow. The bangle measures 11/16" wide X 2 1/2" wrist X 3/8" wall thickness. The dots show up more in person and the marbling is unusual. This is a great stackable bangle size.
The bottom Shultz bangle is a 2 row checkerboard in tortoise and cloudy marbled applejuice. The bangle measures 15/16" wide X 2 1/2" wrist opening X 5/16" wall thickness.