Feature: 1. [Superior Protection] The baseball cap insert provides exceptional shock protection, safeguarding your head against collisions and scratches. 2. [Transform Your Cap] Turn your favorite baseball cap or trucker hat into lightweight head protection with this flexible insert. 3. [Unmatched Comfort] Designed for maximum airflow and breathability, this hat insert ensures a comfortable fit without compromising safety. 4. [Comprehensive Head Protection] Our design includes added protection for the back of the head, providing thorough coverage. 5. [Safety Application] This cap protective insert is ideal for mechanics, automotive assembly, maintenance, outdoor sports, and more. Specification: Item Type: Baseball Cap Insert Material: PE Feature: High toughness, anti impact Color: White Package List: 1 x Baseball Cap Insert