This single glove has two big things going for it: the over the shoulder design - which is much more comfortable and secure than a normal armbinder. And the price.
Unfortunately mine is already broken after just a few weeks. PU leather is kinda flimsy and this thing does not hold up to real struggling.
I still recommend it, Treated gently I'm sure you can get a much longer life out of it. Or you can consider it a cheap way to test the design before committing money to something sturdier.