The ZERO2 ANKR LOCK's advanced locking mechanism securely holds the top straps of your chinstrap in place, providing a snug and comfortable fit and allows the athlete the confidence to focus on their game Designed for effortless integration with your existing helmet –simply remove the original chinstrap snap and screw the ANKR Lock System into that same location, holding your straps in place at the desired length Made with a durable, engineering-grade polymer, the ANKR LOCK system is built to withstand the rigors of the game, ensuring long-lasting performance and reliability