Heavy Armbinder (Poly Webbing)
This nylon webbing harness is designed with adjustable straps to fit just about any size. If a single model fit is desired, the straps can be trimmed easily as is shown here.
The webbing itself is one inch wide and has a breaking point of 600 pounds, so it is extremely secure yet comfortable to wear.
The shoulder stapes are attached to a single 2" metal ring in the middle of the back. The straps are stitched strongly in place and are dually adjustable for optimal placement of the buckle. Each horizontal arm restraint is attached to a 1-1/2" ring.
For extra padding on straps, see this listing: