I am about 95% sure that this is not an authentic Grunt Style product. The shirt itself if extremely odd shaped. The sleeves are huge, the length of the shirt if about that of a belly shirt, the product label is printed sideways, the material feels/looks cheap and the entire shirt looks like it was put together from several different pieces of other shirts. I have purchased Grunt Style shirts directly from Grunt Style in the past, and this looks nothing like their products. Do not waste your money.