A presentation by FirstSpear on the Line One Belt Biothane that is available at their store... "The line one belt is our most popular everyday belt! Borrowing its name from an old NSW term for the first level of clothing or gear, the Line One Belt has amazing tactical performance that maintains the high level of comfort and mobility usually associated with leather. Urethane covered nylon provides superior strength and weather-resistance. This belt won’t crack, peel, or become stiff in frigid temperatures. Specially tempered, non-slip coating eliminates “break-in” time and allows for leather like flex, yet it is impervious to sweat and water and will not stretch or lose its original shape. The Line One Belt is an excellent platform for concealed carry or for just keeping your pants up with style!"