STX is putting their full marketing force behind the K18 line. Why? Because they know that they over engineered this pad to have many of the same qualities and technology of pads twice the price. The K18 line is simply awesome! Slip these on and you will know why. The upgraded mesh materials on the forearms and super flexible outer shell affords all the protection of the big brother pads the sell at the top of the line. These will hit the best sellers list right off the bat.