Skullerz 8945 Universal Bump Cap Insert - Color - Gray. Skullerz Universal Sized Bump Cap Insert is a lightweight (weighs less than 3 ounces), impact-resistant shell that inserts into any baseball cap, hat or other headwear for additional head protection.

Horizontal and vertical two-way flex design adds protection from worker-generated impact to any cap. Innovative trim-to-fit feature adjusts height to fit different cap designs by simply using a pair of scissors. Lightweight polypropylene construction will not break or crack. Strategically placed vents allow for continuous airflow and breathability. Closed cell foam padding reduces impact and will not absorb odors. Weighs less than 3 oz.