Welcome to our store！</br> 1、Surface Text: The text on the surface of the dice is numbers, and the numbers on the dice will not wear out and are durable. 2、Develop Intelligence: A hands on way to practice basic math skills. Develop children's intelligence for early childhood education. 3、Plastic Material: The positive and negative number dice is made of plasric, which is waterproof and wear resistant, and can be used for a long time. 4、Math Teaching: You can practice advanced math calculations using both positive and negative numbers. 5、Good Workmanship: Exquisite workmanship, beautiful appearance, small and portable size, providing you great using experience. <p class="wang-edit-text"><p class="wang-edit-text"> <p class="wang-edit-text"> Item Type: Dice Product Material: Plastic Color: Black and White Weight: Approx. 92g / 3.2oz Application: Math Teaching Product Size: Approx. 1.6x1.6x1.6cm / 0.6x0.6x0.6in <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 20 x Dice Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>