【Material】 Plastic, safe for characters, non-toxic, ecological and practical. 【Bright stones】 About 300 pieces of bright stones per bag. Absorb enough solar light or other artificial light during the day to shine for 3 to 6 hours at night. 【Easy to use】 Expose to the sun or a strong light for 2-3 hours Then they Brill automatically in the dark. If you expose them to intense light for a longer period, they will shine more and more. 【Ideal decoration】 The pebble light in the dark is the best night decoration. The charming rollers that shine in the dark mix them and will become more brilliant and will increase the charming environment of the dark night. 【widely used】 Indoor and outdoor pebble decoration, very suitable for the decoration of gardens, sidewalks, flower beds, decorative vases, aquarium water games, swimming pool facilities, etc.