Ideal party favors for birthday theme party, sitting still game, classroom, exercising timer and timing kids' study, brushing teeth. Nice decoration for your home and office. Great Gift for children and friends. Perfect supplement when you play games like speak out game, making your game time more exciting. Made of premium plastic and glass. Safe and durable. Our sand timers are surrounded by a plastic tube for sturdiness. Unlike cheap copies, the sand in our hourglass goes smoothly and won't get stuck. Each sand timer is not a professional timing device. Please allow time deviations. 3/4"L x 3/4"W x 3 1/8"H