This sand timer is made of high borosilicate glass, hand blown, high definition, premium quality and lightweight. The sand will quietly pass, let you enjoy the wonderful time. It makes your life more enjoyable. It helps you calm down and enjoy your time, relaxing your tired mind and relieving stress. Ideal for classroom, games, teeth brushing, doing homework, cooking in the kitchen, psychological training and fitness. Perfect gift for Mother’s Day, Father’s Day, Thanksgiving Day, Teacher’s Day, Children’s Day, Valentine's Day, Christmas, and the other special and meaningful festivals.