10 years ago..in a time not so different from now..
..EXCEPT for the fact it was considered a feat to find suspended rings anywhere but a gymnastics gym. Nowadays we have things like crossfit as a platform for weighted and body weight exercises which exposed rings as a sufficient way of working out, not sure what took everyone so long to figure that out.
Not everyone can afford to go to a gymnastics gym or a crossfit gym, BUT there are plenty of companies that have monetized the demand for rings supplies for customers to set them up wherever they want. Outside, backyard, in your home, at a park, public bathroom, look I’m not here to judge, I’m just here to let you know what some of the best gymnastics rings for sale are.