Safety sand clock is made of durable ABS, break-resistant borosilicate glass, safe colorful sand. Great for studying, Cooking, Exercising, Games and etc. Good idea to Help kids do things more efficiently and develop a strong sense of time. Ideal for using at Home, Classroom, Office and more. 5 min, 10min, 30min, 60min is avaliable. 5'' H x 2 2/3'' D
