Does body armor expire? In short, yes, all body armor does expire, but not all body armor is equal. Hardwire utilizes Dyneema. Dyneema is the only man-made fiber stronger than spider silk, coming in at 15X stronger than steel. It is naturally buoyant, waterproof, moisture-wicking, breathable, and will not delaminate due to moisture. Kevlar on the other hand will begin to disintegrate with element exposure and is only 5X stronger than steel.