My side reins with donuts are about 17 years old. I don’t lunge all that often, as I prefer to long line, but still these side reins have held up and are still in super condition. I don’t know the brand, as any stamp they may have had has worn off. All I remember is they were made in Germany and have nice thick donuts that are rugged, but offer a little stretch. My parents paid ALL the bills back when I got the side reins, so I don’t remember the price, but I remeber they were pricey. Something in my mind tells me they were in the $75 range. My mom was always big into the “buy the best you can afford b/c it will last if you care for it” and in this case she was so right.
I used my friend’s all leather side reins on one of her horses that I was lunging for her and found the horse wanted to get behind the bit and really curl up his neck in an unnatural manner. I didn’t care for them at all.
I find the elastic side reins to be way too stretchy.