Adjustable elastic fitment strap to fit into any size. - Foam dust seal helps close out tiny gaps for complete protection. - Foldable and light weight by design. - Ventilation system that maintains airflow and prevents fogging. - Anti-glare coating to prevent irregular vision. In the Box 1X Goggles Specifications: Color BLUE California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov