1. This hourglass set contains 6 pieces of hourglasses in different colors, including a 1-minute hourglass, 3-minute hourglass, 5-minute hourglass, 10-minute hourglass, 15-minute hourglass and 30-minute hourglass. It's great for reading, cooking and baking, brushing teeth, playing games, and training timing.2. SHOCK RESISTANT HOURGLASSES: Our timer is made of ABS and glass. The hourglass is a very effective visual cue that improves alertness and time management.3. BEST TOOL FOR TIME MANAGEMENT: It will help your kids make things more efficient and develop a strong sense of time. The timepiece can be used for cooking, playing, classroom, parenting and exercising. Can also be used as a home or office decoration and timing tool. Great gift for kids and friends.4. Hourglass has matching black molded end caps and clear thick wall. Each timer has colored sand and a clear digital display for easy identification.