Yes, shin guards for karate training and competition may differ. Training protectors are usually more flexible and lightweight to allow the exerciser freedom of movement while still providing basic protection. They can be made of soft materials such as foam rubber or neoprene to absorb shock and protect against minor hits and kicks. On the other hand, competition pads are usually stiffer and more shaped to provide better protection against heavy kicks and impacts. They are usually made of harder materials such as strong plastic or a combined material of foam and plastic.