Atomic Glow adds rechargeable glow effects to fly tying materials.Charge the coated side with sunlight, black light, UV light, or LED light for 5 to 20 minutes. The material produces a sustained glow for more than 8 hours and can be recharged many times for several years. Its effects show in shaded conditions, including dawn, dusk, and deep murky water.Key Features Available in 1/16 inch strips and 3 x 4 inch sheets. Color options include Fluorescent Blue, Fluorescent Green, and Fluorescent Orange. 1/16 inch strips are also available in an assortment pack. Coated side charges with sunlight, black light, UV light, or LED light. Charges in 5 to 20 minutes for more than 8 hours of sustained glow. Product Details Recharge the material by exposing the coated side to light. Material can be recharged many times for several years. Glow effects are seen in shaded situations such as dawn, dusk, and deep murky water.