This Glow in the Dark Tri-spinner helps relieve stress, is easy to carry, small, simple, discrete and fun! Also effective for Focus and Deep Thought. 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. Spinners can be spun only using the fingers of one hand to stop and start spinning. Ideal size suitable for adults and children. Random color will be shipped based on stock available.