Material: Our sturdy and durable sand timers are made of durable PVC, instead of cheap plastic,not easy to break. Functions:Ideal for timing cooking,playing games,exercising and so on,also act as a wonderful decoration for your home and office. Easy to move: Delicate and lovely appearance, small external, make this hourglass easy to move. Children can carry, does not take up space, and easy to move, do not need to waste too much energy.