Improves upon the design of Skullerz 8945 Insert for enhanced breathability and up to 35% more crown impact protectionLightweight head protection guards against bumps, scrapes, bruises, and other minor head injuriesAll-over venting enhances airflow to keep wearers coolImpact-resistant insert will not break or crackPatented “trim-to-fit" design easily adjusts insert height to fit different cap designsHorizontal and vertical two-way flex design for protection that is not stiff or bulkyExtra-large closed cell foam reduces impact without absorbing odors