★ NATURAL LIGHT: These pebbles can absorb the sunlight during the day and light up at night. The glow rock is exposed longer during the day, it will glow persistent longer in dark. ★ PERFECT DECORACTION: Luminous stones glow in dark, specially fabulous and attractive in the night, are perfect decoration for your garden, walkway, potted landscape, driveway, crafts, fish tank, etc. ★ EASY TO USE: Naisidier 150pcs Outdoor Decor Stones are pretty easy to use, just need to put them at any place you like. ★ HIGH-QUALITY MATERIAL: Blue pebbles are made of polystyrene which is eco-friendly, wear-resistant, durable, no-radioactivity and no-toxic. All these fluorescent pebbles are reusable and long-time lighting. ★ 100% SATISFACTION GUARANTEE: All the customers\' satisfaction is our priority. If our products can\'t make customers happy and satisfied, we will provide a full refund policy to all our customers.