This sleek and simple looking hourglass shaped puzzle can be challenging even if you know how it works. It may even require a bit of luck in order to solve it. The goal is to separate the two halves and put back together. Although it is much easier to put back together.
The OurGlass is a fully machined puzzle made of brass and a few other metal components. Measuring about 1.5" tall and 1.25" wide.