The DYE performance neck protector is a progress in neck protection technology. We’ve specifically constructed the most critical areas utilizing a proprietary material. This new material is specifically engineered with intelligent molecules. They flow with you as you move, but on shock, lock together to absorb the impact energy. Soft while you’re wearing it, hard when you get hit. The inside material that is against your neck is made of one of the softest, most breathable materials. The neck protector offers comfort and protection for your neck. One size fits all.