To protect your shins, you need to buy the best shin guards. Cheap shin guards are not worth the money and they do not offer the same level of protection. The quality of the fabric, padding and straps is important in order to get a good pair of shin guards.
It is important to take the time to find a good quality shin guard that will protect you from any injury. Cheap shin guards are not worth the money because they will fall apart while you risk breaking a bone. With cheap shin guards there is no guarantee that they will do their job.
You can train kickboxing wearing any of the shin guards on this top 10 list. Venum and Hayabusa make the best MMA training gear on the market.