Description: Made of durable PVC, high borosilicate glass, sand and protective cover, which makes sand glass timer not easy to break and very durable. Make it much easier to cultivate children SENSE of TIME by setting limits on TV and tablet screen time since the hourglass makes the timing more fun! Sandglass clock timer for kitchen, classroom, kids games, yoga, swimm etc. A wonderful decoration for your home and office. Great birthday gift, wedding gift & Christams gift. Help you do things more efficiently and develop a strong sense of time. Counting time: 25 minutes. Specification: Material: Sand +Plastic Size: Approx. 12x6.5cm / 4.72x2.55inch Color: Blue / Pink / Red / Purple (Optional) Package Includes: 1 Piece 25 Mins Hourglass Note: 1.Please allow a slight difference between the size from the above and the actual item due to manual measurement. 2.Due to the difference between different monitors,there could be a little color difference acceptable, please kindly note.