These were worn on the wrists by several adults during a simple dance performance. They make a bright, loud "shalan-shalan" sound. They have a good weight to them and seem like they would last a long time. They are secured to the wrist with Velcro. Some still have the product sticker on the back of the strap. They can also be held in the hand and rung, like a ring bell. The castanets are wooden and unused. The wrist bells include two unused pink ones, and five yellow ones used once for practice and once for the actual performance.