1. Ideal set: The set includes 15 multiplication learning cards, 2 markers (blue and red), and 1 metal binding ring to effectively engage your child in math games. 2. Durable material: Our multiplication learning cards are made of thickened cardboard, laminated for waterproofing and fade resistance, and come with removable and reusable metal binder rings. 3. Easy to use: Multiplication tables are printed on both sides, with questions on one side and answers on the other. Included are dualtip pens, making it easier for kids to review and check answers after solving a problem. Simply wipe off the answers with paper for easy correction and reuse. 4. Pocket size: The multiplication flash cards measure 13 x 7.5 cm and feature rounded corners to prevent scratches. The jump ring helps with storage and organization and allows them to be attached to a school bag for convenient portability and learning anytime, anywhere.