Advantage Premium Quality: Choose ONE Color/Difficulty of your liking. Our Rebreakable boards are specifically designed to provide the best experience with high quality plastic and rubber padding to provide support and avoid unnecessary knuckle complications. Durable Design: The boards are made to easily reattach after broken. It is designed to simply slide back together from the top down, ready for another go. Level of Difficulties: There are four boards to choose from. Each representing a different difficulty. The Yellow board is the easiest board to break and is designed for children to develop proper stance and technique. We then increase the level of difficulty to Blue, Red, and finally Black. The Black Board represents a 1-inch wooden board and is only for the advanced Budget and Eco Friendly: Replace hundreds of wooden boards with a single rebreakable board, saving money as well as performing your duty as caretakers of the environment ( SAVE THE TREES). Perfect Gift: Delightful gift for students learning martial arts including taekwondo, karate, Muay Thai, Kickboxing, Boxing and many more. It can also be gifted to the average crowd looking to build self-confidence and self defense (especially for children). Product Name: Reusable Professional Board Material: ABS. Size: 30.5 * 21 cm Thickness: yellow 1cm/ blue 1.2cm/ red 1.5cm/ black 2cm 1cm endurance :15kg 1.2cm endurance :30kg 1.5cm endurance60kg 2cm endurance110kg Package includes: 1* break board or 3* break board Note: Each batch of the product may have a certain error in color, and the size may also have a certain error range, please understand, thank you for your purchase, wish you a happy shopping