Interesting and Fun for Kids: The original 3D glowing planets set includes the moon, earth, jupiter, saturn, solar system, then we add a series of children's favorite unicorn 3D pattern. 3D Stars pad sticks on the top of the hourglass sand timer, fun to children. Brain Teaser Toys: The puzzle plastic hourglass can train attention and hand-eye coordination. Can be used to recognize colors, feel good, exercise your fingers. Non-breakable,No odor, smooth corners, adults, and children can play. Durable, lightweight, and easy to carry Various Timing: 1 minute, 3 minutes, 5 minutes, 10 minutes,15 minutes, 30 minutes, and each one has a number of time mark, easy to distinguish which timer for which usage.