Armbinder's are one of my favorite pieces of bondage gear. And like most bondage gear, they're expensive. I actually had two cheap ones. One of them was pretty bad, and the other was decent for what I paid, but not sized for well so I only used it a few times.
But it has been on my list for years to get a better quality one, and I finally have. There's a risk in buying bondage gear without measurements. When this one arrived it looked small to me. I was actually nervous I wasn't going to be able to use it, and unfortunately I couldn't return or exchange it for a different size.
Rachel Adams is an excellent person to test such things with, and it turns out the armbinder was just fantastic. So expect to see it more in the future when the opportunity presents itself!