These 3 easy-to-grip rubberwood frames contain glow in the dark liquid within their viewing panels. Stimulate the senses with blue, green and orange luminescent colors. Encourage observation and descriptive language as children watch the liquid swirl. The large, smooth handles are easy for small hands to grip and maneuver. Just 15 minutes of sunlight will activate the panels for about 6 hours. These durable rubberwood panels are designed to last for years without scratching, leaking or breaking. For ages 12m+. Size: 7.25”L x 4.5”W. Size of lens: 3.2” dia.