Security Hourglass for Kids: The outer layer is made of hard acrylic material and the inner one is made of glass, which is protected by double layer. Besides, the hexagonal cover is firm and hard, so it will not easily cut your children's hands, secure avoiding moms' worry. Great Time Management Tool: The plastic hourglass timer kids help your kids do things more efficiently and develop a strong sense of time. Can be used for hand-washing, teeth brushing, cooking, games, classroom, study, autism, visual, desk office decorative and teachers use timer. Also can be used as home office decoration, practical timing tool in daily life.Great Gift for children and friends.