Designed to perform in the frigid north, our polymer is a new to market material that is specially formulated for cold weather impact resistance. Its unique properties allow virtually no change in mechanical properties from 73f/20c to -22f/-30c, whereas most polymer materials used for magazines have between .125-.25 the strength at -22f/-30c compared to room temperature. This gives us on average 3-8x better impact resistance than competitive materials at -22f/-30c.