Features:*Outdoor & Indoor decoration: Ideal for decorating plant plots,garden walkway and paths, fish tank, succulents,yard, glass vases,landscaping, swimming pool as well as borders and flower beds. Recommend multiple packs with different color for large area.*No Electricity Required: After being exposed under the sunlight or put stones under strong light (lamplight) for an hour,Glow stones can glow for hours in the dark. More hours of absorbing sunlight and stronger the light, the brighter the stones.*Ultra Long Life Span: Glow in the dark pebbles can absorb sunlight and lamplight repeatedly with ultra long life span up to 15 years.*Eco- Friendly: 50PCS glow stones are made from polystyrene (PS), eco-friendly, non-toxic, non-radioactive, high polished with no sharp corners, safe for decorating garden and fish tank. Specification:Size:2-3cm/0.78-1.18inchMaterial: Photoluminescent pigment + ResinUsage: Lighting the pathway, driveway, walkway, flower bed, potted plants, or fish tanks. This is the best DIY decoration for vases, fish tanks, aquarium, crafts, swimming pool. Ideal for your garden, patio, lawn, yard. How do you make them glow?1.Don't leave the pebbles under light with the package .2.Don't pile up pebbles , make sure each pebble is fully illuminated .3.When the pebbles are glowing , please make sure the surroundings are dark enough .4.You can enjoy the glowing pebbles,the longer the absorption time , the longer the illumination time . Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Content:50Pcs Luminous StonesNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.