1. More accurate sand for children: Made in the and imported. The Great Sand Timer Combo Pack Set has reached the highest quality ± 5% industrial standard in the . And each has a few signs of time. It is easy to distinguish the use of the timer. Furthermore, the plastic cover at both ends of the hourglass timer will be more robust and durable and will not roll when it wants to put it on the ground. So you can use it ly to avoid mothers' concern, you and your children. This functional plastic is easy for the sand timer to carry 1/2/3/5/10/30 minutes and children's teeth brushing, work, cooking, exercise, game, relaxation and so on. And for the class with different bright colors sand timers decorative, the use of teachers and more. This makes your family, friends, colleagues and those who want to improve productivity and productivity. 100 % customer satisfaction and quality guarantee. We are sure that it is the gift for children! He chose more than 10,000 parents and children products around the world. Now order to join the family! Also, the upper shelf cannot be broken vault!