PERFORMANCE TECHNOLOGY: Patented self-adjusting design provides a personalized fit for maximum protection and comfort Protective ABS shell with wrapped ears and forehead for ultimate comfort and durability 14 vents for optimal airflow to help keep you cool Patented Universal Jaw Guard included for added jaw protection for either side of helmet One size fits most ADDITIONAL DETAILS: Fits sizes: 6 3/8" - 7 5/8" Meets NOCSAE(R) safety standards Can be used for play in both Baseball and Softball