Premium Quality: Rebreakable boards are made with high quality plastic and rubber padding, eco friendly, designed to provide the best experience. 4 Level of Difficulties: Yellow, Blue, Red, Black. Four boards of different difficulty to choose from. The Yellow board is the easiest board to break and is suit for children or beginners. Black Board only for the advanced or coach. Reusable Design: The boards are designed to attach easily after breaking. Just simply slide back together from the top down, ready for another go. Wide Applications: Suitable for the Taekwondo students train and perform, etc. Match the board thickness with your belt level to choose you need. Perfect Gift: Great gifts as taekwondo, karate, kickboxing, boxing, students learning or training, etc. Specification: Material: Plastic, Rubber Yellow 1cm/0.39inch thick, impact strength 15kg. Blue 1.2cm/0.47inch thick, impact strength 30kg. Red 1.5cm/0.59inch thick, impact strength 60kg. Black 2cm/0.78inch thick, impact strength 110kg. Size Chart: 31x23cm/12.20x9.06inch Package Includes: 1 x Martial Arts Breaking Board Note: 1. Please allow slightly 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!