Wondering if this mat sheds? Little specs of black coming off? Or will it remain completely intact?

Our 1/4" Tough Mats will not shed. When you get your rubber mat, there is potential for some rubber material to come off the mat. This is excess material from the production process. We try to clean the mats as thoroughly as possible, but there is always the potential for a little debris. All you would need to do is vacuum up the loose material.