Giro matte black nine.10 helmet features....

• Weighs only 13.5 ounces in a size LG.
• Construction is an In-mold shell construction which fuses the polycarbonate outer shell with the helmets impact absorbing foam liner for extra durability without excess weight.
• The liner is a comfortable EPS liner with adjustable venting for your comfort.
• You get 14 supercharged vents so you can be as cool as you want to be. 10 of the vents have adjustable Weatherstrip Shield in the liner that can seal out cold and snow when closed and allow extra venting when opened.
• A small helmet brim extends over your goggles keeping the snow off the top goggle vent.
• A small vent is built into the brim to allow better air flow ventilation for your goggles. Without stack venting built into the brim, you goggle can fog easier.
• A goggle strap notch is built into the shell to keep the goggle strap in place along with an easy to use snap goggle clip.
• Conforms to all ASTM F2040 and CE prEN1077 approved standards.

Sizing your Giro nine.10 helmet.
Giro's unique In Form™ adjustable fit system allows a wide range of fit per each size. You are able to dial in your comfort level with a built in adjustable headband. This comes in especially handy when you need a little extra room when wearing a head liner.

To get the correct helmet size, measure the circumference of your head just above the eyebrows with a soft tape measure. When in doubt, go up one size.

SMALL, between 52 - 55.5 cm or 20.5 - 21.75 inches
MEDIUM, between 55.5 - 59 cm or 21.75 - 23 inches
LARGE, between 59 - 62.5 cm or 23 - 24.25 inches
X-LARGE, between 62.5 - 65 cm or 24.5 - 25.5 inches

Our comments; We like brims and this one has venting built in. The nine.10 is sure to be a number one seller.