Using these colorful sand hourglass timers can help solve all your troubles. Not only help you do things efficiently, but also can teach your kids about the time meaning, What's more, Perfect for timing cooking, games, exercising, experiment and kids study, Their multi colors also can make your home more unique. A quite great gift for your kids and friends. Hourglass symbolizes love and friendship, as well as happiness. And this refers to that we should be eternal happiness, and forever cherish the love and friendship! It is the best gifts to friends, lovers ! Also perfect gifts to teach kids for time management ! Features: Material: Transparent Acrylic +Plastic + Glass Tube + Sand Height: Approx. 16cm / 6.3inch Across flats: 7.2cm / 2.8inch Diagonal length: 8.2cm / 3.2inch Item weight:6.4 ounces 4 colors (2 sets )available Set 1：3Minute Timer(Yellow)、10Minute Timer(Orange) Set 2：5Minute Timer(Blue)、 15Minute Timer(Light Green) Package Including:2 X Glass Sand Timer NOTICE: Sand hourglass timer may be ±10% time deviation,Not a complete precision timing device. 2PCS HOURGLASS TIMER SET Pack Of 3 minutes sand timer and 10 sand minutes Sand timer. Perfect to help manage work and break times easily, making goal setting pleasant and calming. Great gift for children and friends. Of course, it also can be used as a home or office decoration and pleasant you. Beautiful & Practical Art With the crystal clear appearance and smooth sand flowing in the hourglass, you can clearly see the time passing through the fingertips like a piece of beautiful art. DURABLE PROTECTIVE COVER With durable protective cover on each side to protect sand timers well, not easy to be broken, very shock- resistance Sand Timer. Nice Helper of Leisure & Entertainment Great for timing kids’ tooth brushing, Studying ,Cooking, Exercising, Games and so on. Ideal for using at Home, Classroom, Office & more. High Quality Security Hourglass The outer layer is made of hard plastic material and the inner one is made of glass，which is protected by double layer. Besides, the hexagonal cover is firm and hard, so it is more sturdy and secure avoiding moms' worry. Transparent Glass Tube Made of transparent Acrylic, very solid and anti-broken, so just feel ease when you kids use these sand timer set.