【Glow in The Dark Pebbles】These glowing rocks absorb and store energy from sunlight and artificial light sources, light up in dark environments. they are ideal decoration for indoor, outdoor or wherever you might want to put them.【Safe & Durable】The glow in the dark stones are made of natural resin, non-toxic, non-radioactive and odorless. Glow in the dark rocks are no harm to people, fish, birds and plants. Fine workmanship and polish so there is no sharp edge.【Widely Used】The luminous pebbles are perfect for indoor and outdoor decorations. Outdoor can be used for walkways, paths, lawns, ponds, and flower beds. Indoor for vases, potted plants, fish tank, aquariums, etc.【Easy to Use】Put glowing rocks under the sunlight or lamplight for 1~2 hours to absorb enough energy. The glow rocks will glow in the dark for 3~4 hours, the brightest in the first 30 minutes, then get dimmer and dimmer over time.【Warning Tips】Spread out these rocks when charging to make sure each is fully illuminated. The glow stones for outdoors are very small, used by children must be under tutelage of adult, avoiding children swallowing the rocks.