That's just about what I would do to make a monoglove armbinder. The other method, a bit more complicated, is to have two triangular pieces with a long strip along the sides, so the finished product looks like a pie slice. The outer triangle would have the eyelets or a zipper closure down the middle:
To use a zipper closure, it would have to be a good, solid one, preferably a metal one of good quality (not a crappy one made in China). Experience has told me to avoid certain brands of zippers.
While I was drawing the image, I had an idea for a self-release method involving two closures, one facing outward, and the other facing the back. The outside closure would be a zipper (for self-entrapment), and the one facing the back would be laced, but with the knot on the inside
of the armbinder and at the hand end (assuming there is enough room to maneuver the fingers).
The laces would have to be short enough to come out of the eyelets once you undo the knot and start pulling the edges apart. The risk here would be the laces snagging on a sharp edge inside the eyelets. Large eyelets would reduce or eliminate that risk.
An alternate or backup release would be some way of undoing the shoulder straps. Using velcro instead of buckles?
I'm putting this on my R&D list - I'll make one out of scrap fabric first (no shortage of that) and "test fly" it sometime. If it works, it's going to be one of the accessories for my "correction corset", done in the same materials as the corset.
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