This sand timer is made of premium material, which can withstand long-lasting use. Features the wood, glass and sand material, which has high durability, not easy to decompatible withm. Fine workmanship, ensures practicality. Features -Color:As Shown -Material:Wood, glass, sand -Size:10.00X6.00X6.00cm/3.93X2.36X2.36in - Contains three time periods, blue compatible with 3 minutes, green compatible with 5 minutes, and yellow compatible with 7 minutes. - The hourglass is very colorful and attractive compatible with kids, the hourglass is made of wood, sand and glass, the thicker glass feels durable. - Hourglasses are big enough to hold in your hand and see how they work, they are very stable on a flat surface. - Unlike traditional timers, hourglasses don't make noise or "tick," making them a great choice compatible with homes that need quiet and limited sensory stimulation. - Available in 3 time denominations, the hourglass has multiple uses: wash your hands, brush your teeth, count down a brief moment of screen time, how long until school and more. The time is divided into 3 minutes, 5 minutes, and 7 minutes. Package list: 1 x sand timer