Patented Side Impact Protection (PSIP) Research-based mandible protection helps reduce the forces from side impacts. Technology feature consists of side shell extensions combined with side liner extensions custom inflation and an overliner for proper fit, comfort and stability. Fitted liner system with inflatable jaw pads. Overliner--moisture resistant liner cover with antimicrobial properties built-in to protect the product. Provides comfort and stability. Lightweight technology. Recommended for Youth Players entry level up to junior high.