These flow in dark fidget spinners can glow in the dark as long as you put it under the light source ( natural light or artificial light )for 2 minutes every time in advanceAn easy thoughtful gift for your children or yourself. Easy to carry, put the fidget spinner into your pocket and play it whenever and wherever. Hold spinner in one hand and use the other hand to spin it rapidly using small continuous strikes to keep it spinning indefinitely with practice.