The Taekooki hourglass features a hexagonal design that protects it from damage and makes it easy to transport. With a durable two-layer structure, its outer layer and lid are made of PVC and its interior is made of high-quality borosilicate glass. The colored sand inside creates a relaxing and optimistic visual experience. This hourglass is ideal for measuring time in sports, games, classes, and everyday tasks. It helps children become more effective and aware of time. Size: 12.6 x 5.7 cm. Note: This hourglass does not replace a mechanical clock and may have a time deviation of ±10%. Give this colorful hourglass as a gift to your friends and family on special occasions such as Children's Day, Thanksgiving, and Christmas.