Premium Quality: Breakable boards are made of high quality plastic and rubber, eco-friendly, designed to provide the best experience. 4 Difficulty Levels: Yellow, Blue, Red, Black. Four boards with different difficulty levels to choose from. The yellow board is the easiest to break and suitable for children or beginners. Black board only for advanced or professionals. Reusable Design: The boards are designed to be easily reassembled after being broken. Just slide them together from top to bottom, ready for another round. Wide Application: Suitable for Taekwondo students to practice and perform, etc. Match the board thickness to your belt level to choose the one you need. Perfect Gift: Perfect gift for kids, adults practicing taekwondo, karate, kickboxing, boxing, students learning or training, etc. Specification: Material: Plastic, Rubber Thickness: Yellow 0.6cm/0.24in Blue 0.8cm/0.31in Red 1cm/0.39in Black 1.6cm/0.63in Size Chart: 31x23cm/12.20x9.06in Package Includes: 1 x Martial Arts Breaking Board Note: 1. Please allow a slight error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping