Features 1. Pack of 4 Different Sand Timers: 1 minute pink, 3 minutes green, 5 minutes purple, 10 minutes blue, each timer with number printed on the glass, easy to tell. 2. Perfect Size: Timer is small, portable and pretty mighty, which is handy when you want to travel with some of them. 3.9 inch x 1.6 inch. Perfect size for little hands. 3. Durable & Safe Material: Made of durable PVC, borosilicate glass, non-toxic sand and protective cover which won't break easily even if descend on floor. Suitable for kids. 4. Great Time Management Tool: The hourglass sand timer give a visual aid to know how much time is left and kids know a time frame of how long they need to read, play, watch ect. Good way to beat procrastination. The sand will quietly expire, allowing someone to forget time and enjoy time. This made our life much easier. 5. Widely Use: Ideal for classroom use, game time, kids' tooth brushing, child learning, self- control, psychological training and cooking. Note: This sand timer is not a precision timing device, so there is time deviation. Specification Material: Glass, Silicone Color: Pink, Green, Purple, Blue Size: 10 x 4 cm Weight: 350 g Package Include: 1× Hourglass Sand Timers Set