The glow stones are environmentally friendly way to light up or decorate! It is great use for decorating yard, garden, fish tank, walkway, potting, aquarium &amp; fish tank and more.<br/>Features:<br/>Lighting a pathway, driveway, flower bed, fish tank aquarium, or garden, make the places special. <br/>Glow in the dark after full sun exposure, can lasts approximately 5 to 8 hours.<br/>The stones are all unique and they can be used in different ways according to your imagination.<br/>The glow stones are made of resin, non-toxic, non-radioactive material.<br/>It can last up to 15 years, not only save energy but also protect our environment. <br/>Several colors for your option, you can send it as a gift to your families, friends.<br/>Specifications:<br/>Style: 12 styles (optional)<br/>Qty: 30 stones per bag<br/>Single stone size: 20~30mm / 0.79~1.18in<br/>Package size: 100 * 80 * 20mm / 3.94 * 3.15 * 0.79in<br/>Package weight: 65g / 2.29oz<br/>Note:<br/>The stone cannot glow itself, it will absorb the sunlight at outdoor, and glow at night. Or it can also absorb lamp light, and glow if you put it inside home. <br/>Package list:<br/>1 * Bag of Glow Stones