Better start practicing your ninja chopping skills.
You might hear the word 'multiblock' and think. 'Perfect! That must be like some kind of crazy ninja shirt that blocks martial art strikes.' Actually, the eS Multiblock Short-Sleeve T-Shirt can't protect you from a ninja attack. In this case, 'multiblock' just means more than one block of wood (which could actually help you practice your karate moves in preparation for the impending ninja attack).