Review title is Glow kinda sucks [SEP] They don't glow without &#34;charging&#34; them with light, and even then, the glow kinda sucks. As far as barbells go, they serve their purpose. They are plastic and flexible, so if you are a biter, you might want to be careful. Because they are plastic, they are also nice to wear before xrays and stuff so I don't have to remove my piercing.