The SHK-1 Half Shield was strategically designed to seamlessly tuck under the brim of the SHK-1 Helmet (not with Full Brim) with an attachment mechanism that easily moves over the brim and snaps back into place. Keep your eye protection with you all the time — to provide additional protection right when you need it. 
**This product is not compatible with the SHK-1 Full Brim (Vented or Non-Vented).
SHK-1 Half Shield features include:
Certified to ANSI Z87.1 standards — these spherical lenses provide unparalleled optical clarity.
Wearable over prescription glasses — designed with extra room to comfortably fit over prescription glasses 
Anti-scratch coating — to keep your field of vision as clear as possible and less vulnerable to scratching
Anti-fog treatment — to prevent your face shield from fogging up and disrupting your work
Mounting mechanism to easily attach to SHK-1 helmet