It was easy to assemble and is surprisingly stable. This trainer seemed to meet our requirements. Got a women’s size 6 and fit perfectly, i wasn’t expecting these to be so comfortable but they truly are. 😡Que deshonestos Much smaller than advertised. Other consumer headphones like Bose Quietcomfort, Sony MDX, and the M50x are all consumer headphones that have been tuned at the factory to deliver a bassy, punchy, and poppy sound for enjoyment. But that is NOT what it does. These headphones are over-weighted on one side and wont stay in place. My first pair lasted almost 3 years. The silliest reality show I have ever seen.