PARTY FAVORS: perfect for birthday theme party, sitting still game, classroom, exercising timer and timing kids' study. Nice decoration for your home and office. Great children and friends. Perfect supplement when you play games like speak out game, making your more exciting. GREAT GIFTS: Wonderful gifts, school class prize, giveaways, hand outs, stocking stuffers, goodie bag fillers. Kids will certainly love these hourglass. MATERIAL: Made of premium plastic and glass. Safe and durable. Our sand are protected by quality covers and will not break or leak easily. Unlike cheap copies, the sand in our hourglass goes smoothly and 't get stuck. color: red material: plastic Size: 8.5cm NOTICE: Each sand timer is not a professional timing device. Package Contents: 20 x Sand Timer Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.