Specifications: The mini resin ducks can absorb sunlight in the daytime and emit light at night. The more sunlight it absorb, the longer it glows at night. Make your life more interesting. Material: resin. Color: multiuse color or single color Size: about 0.6 x 0.7 inches/ 15×18 mm. Package includes: 100 x Luminous mini resin ducks Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. These products are only suitable for kids over 8 years old. TIP:please keep away from child under 3 years old to avoid swallowing by accident.