1. Hourglass Set: This set includes 12 hourglasses with durations of 30 seconds, 1 minute, 2 minutes, 3 minutes, 5 minutes, and 10 minutes. There are six different colors, with two of each color. Each hourglass features distinct colors and clear numeric markings at the top and bottom for easy identification. Dimensions: 8.7 cm / 3.43 inches (height) x 2.5 cm / 0.98 inches (width). 2. HighQuality Materials: Our hourglass set is made of a sturdy plastic frame, sea sand, and borosilicate glass, along with a protective cover that ensures durability and shock resistance. 3. Convenient and : These functional hourglasses are portable and perfect for timing activities such as games, reading, tidying up, brushing teeth, and classroom exercises. 4. Perfect Time Management Tool: Help your child improve efficiency and develop a strong sense of time. This hourglass set is great for brushing teeth, cooking, playing, classroom education, and child training, or as a decorative piece for home or office.