Ways to Replaceable Helmet Lenses
How to Replace the Helmet Lens:
1. Flip up the visor to the up position.
2. Push up the button located directly under the visor hinge to allow the visor to disengage from the helmet.
3. Release the visor from its hinge on the other side of the helmet.
Sizing Information:
Small: 21⅝-22 in (55-56 cm head circumference); 6⅞-7 hat size.
Medium: 22½-22⅞ in (57-58 cm head circumference); 7⅛-7¼ hat size.
Large: 23¼-23⅝ in (59-60 cm head circumference); 7⅜-7½ hat size.
X-Large: 24-24⅜ in (61-62 cm head circumference); 7⅝-7¾ hat size.
Measuring Steps:
1. Measure the circumference of your head as sizing chart shows.
2. Put the measuring tape above ears and slightly above eyebrows.
3. Wrap around just below the crown on the back of your head.
Note: The thickness of the helmet liner decides the helmet mostly. If the helmet received does not fit so well, please try exta liners and see if it helps before return the helmet(contact ILM for extra liners or search Asin B0B24LLVWW in Amazon search box).