HSTL GOGGLE | Skull NeonHK ARMY HOSTILE SKULL Protective Goggle and Mask with Smoke Lens Made from a sturdy blend of thermoplastics, the HSTL Skull Goggle is ASTM certified to be BB's resistant. Its double screen lens prevents any possible fogging. FEATURES & DETAILS: HSTL Full Face Mask Removable comfort foam inserts on the upper and lower part of the mask. Quick change lens retention system. Adjustable non slip head strap. Adjustable chin strap with quick release buckle.