High-quality materials: These hourglass timers are made of high-quality PVC materials, glass and sand. They are reliable but please store them carefully; accidentally falling may cause them to rupture and the contents of the hourglass will flow out The package includes: you will get sand timers of different colors, each hourglass is marked with the time; they can be applied to different scenarios, suitable for use alone or in combination Appropriate size: The size of the game sand timer is 3.38 x 0.98 inches, which is portable and does not take up too much space. The internal quicksand hole controls its different timing standards; different hourglass holes have different quicksand speeds Easy to carry: Zhongsha timer is small in size, light in weight, easy to carry, suitable for indoor and outdoor activities; it can be regarded as a lovely gift for children, classmates, etc. Wide range of applications: these different color hourglasses can be used in many occasions, such as timing cooking, playing games, exercise, housework, arithmetic, etc., suitable for classroom study and discussion, kitchen cooking, office work, and a good choice for decorating houses