HK Army HSTL Paintball Goggle (Thermal) - BlackHK HSTL Paintball Goggle System: The HK HSTL Paintball mask is composed of a robust blend of thermoplastic, the design of the HSTL face mask protects critical areas of the user, while still promoting supreme breathability and freedom of movement. The HSTL Goggle System features the quick change lens retention system which allows the player to replace their lens in seconds without the use of tools. Features: Snap in place removable upper and lower