Selected Materials: The shell of the kid sand timers are made of selected ABS plastic, no odor, wear resistance, high transparency and not easy to break. The interior is packed with fine sand, the sand flow is smooth. 8 kinds of Timer: This set of products has 8 kinds of timer, set of 20Sec/30Sec/1Min/2Min/3Min/4Min/5Min/10Min, and different colors are used to make it easy to distinguish. Meet your different timer requirement. Wide Use: It can be used as a timing tool for children to know the concept of time, and also can be used for cooking timing, game timing, etc. (non accurate timing equipment, mainly used for game play, with about 10% time error) Not Easy to Break: Compared with other fragile glass hourglass, this product is made of high-quality ABS plastic, which is not easy to be damaged. The edge is polished smooth, without burrs, and it is safer for children to use. More Quantity: After you purchase, you will get 8 pcs hourglass with different specifications, 0.98x0.98x3.34inch, which is the best gift for your children. Good helper for your children to know time. 8 Packs Colorful Sand Timer Kids Sand Clock Timers Hourglass Sandglass Set of 20Sec/30Sec/1Min/2Min/3Min/4Min/5Min/10Min for Kids Games Classroom Home Office