Made by UltraPoi, these are hands down the most popular LED knobs on the market. With tons of different light settings, these are highly customizable. The silicone shells are also extremely durable, so no more worries when dropping these during toss practice. UltraPoi also offers an amazing warranty for all their products, so buy with confidence that they’ll take care of you if any problems arise. Knobs are micro USB rechargeable.