Aerohead Mips II Helmet

White / S

$999.99

Taxes included.

Aerohead II Mips® is our most aerodynamic time trial helmet ever, designed with CFD and VR, and proven in the wind tunnel with the world's fastest riders on Team Visma

Designed with CFD and VR, proven in the wind tunnel with 2x Tour de France winner Jonas Vingegaard, the Aerohead II Mips® is our most aerodynamic time trial helmet ever. With the protection of Mips® Air Node, a lightweight and ventilated solution for rotational energy management CE and CPSC safety standards are met and exceeded. Visibility is optimized with a magnetically attached oversized eye shield that is positioned away from the rider's face, allowing air to flow over the brow and beneath the Roc Loc® 5 Air fit system. Each Aerohead II comes with two eye shields (Clear and Vivid® Smoke) and a padded carrying pod. Engineered speed — the Aerohead II is your advantage.

Hardshell with In-Mold Hardbody™ Lower Wrap
Durable two-piece shell construction fuses a tough outer shell with a polycarbonate lower wrap—delivering strength without excess weight.
MIPS® Air Node Technology
A low-friction layer laminated to the comfort padding, designed to reduce rotational energy during angled impacts. Lightweight, breathable, and engineered for enhanced protection.
Roc Loc® 5 Air Fit System
Micro-adjustable dial offers independent tuning of fit and vertical positioning, while optimizing airflow and helmet stability for all-day comfort.
Super Fit™ Engineering
Based on over 25 years of fit data and handcrafted design, Giro’s sizing molds match real human head shapes—ensuring a secure, custom-like fit across four adult sizes.
Wind Tunnel™ Ventilation
Proprietary system channels cool air in and pushes hot air out through active vents and internal exhaust paths. The result: noticeable cooling on every ride.
Ionic+® Padding
Infused with pure silver for natural, permanent odor control—keeping your helmet fresh, ride after ride.
Deep Internal Channeling
Aggressively sculpted liner works in tandem with Wind Tunnel vents to guide airflow efficiently through the helmet, enhancing cooling and comfort.

Size Chart

These size charts and conversions are meant to serve as a guide. We recommend you try-on before riding to ensure full comfort and performance.

BIKE HELMET SIZE GUIDE

HOW TO MEASURE YOUR SIZE

Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the Size Guide.

Note: Make sure the helmet fits with a little room when the fit system is loose, and sits low enough to protect your forehead without hindering your vision. Once you’ve got the right size, you can adjust the fit.

ADULT SUPER FIT SIZE	CIRCUMFERENCE
S	51 - 55 cm
M	55 - 59 cm
L	59 - 63 cm
XL	63 - 65 cm

YOUTH SIZE	CIRCUMFERENCE
XS (Scamp Model)	45 - 49 cm
S (Scamp Model)	49 - 53 cm
XS (Dime Model)	47 - 51 cm
S (Dime Model)	51 - 55 cm
Universal Child	47 - 54 cm
Universal Youth (Ages 5+)	50 - 57 cm

ADULT SUPER FIT FULL FACE	CIRCUMFERENCE
S	51 - 53 cm
M	51 - 55 cm
L	55 - 59 cm
XL	59 - 63 cm

ADULT UNIVERSAL	CIRCUMFERENCE
Women Adult	50 - 57 cm
Unisex	54 - 61 cm
Extra Large	58 - 65 cm

GLOVES SIZE GUIDE

MEASURING YOUR HAND FOR THE BEST FIT

You can measure the length and width of your hand as illustrated above, and use the Size Guide to determine your size.1. Wrap the tape measure around your hand at the widest part of the palm, and lightly close your hand to get your Hand Width measurement.2. Once you have that measurement recorded, use a tape measure to determine the length of your hand from the tip of your longest finger to the base of your palm at the wrist. This is your Hand Length measurement.3. You can then compare the measurements of your hand with the data supplied in the Size Guide to determine the best fitting size for you..

MEN'S SIZE	HAND WIDTH	HAND LENGTH
XS (6)	6.3 - 7” / 160 - 178 mm	5.9 - 6.5” / 150 - 164 mm
S (7)	7” / 179 - 200 mm	6.5 - 7” / 165 - 179 mm
M (8)	8 - 8.6” / 201 - 219 mm	7 - 7.6” / 180 - 194 mm
L (9)	8.7 - 9” / 220 - 234 mm	7.7 - 8” / 195 - 204 mm
XL (10)	9.25 - 9.8” / 235 - 249 mm	8 - 8.6” / 205 - 219 mm
XXL (11)	9.85 - 10” / 250 - 265 mm	8.7 - 9.25” / 220 - 235 mm
XXXL (12)	10.4 - 10.6” / 265 - 270 mm	9.25 - 9.6” / 235 - 245 mm

WOMEN'S SIZE	HAND WIDTH	HAND LENGTH
S (6)	6 - 6.7” / 155 - 169 mm	6.3 - 6.7” / 160 - 169 mm
M (7)	6.7 - 7.4” / 170 - 189 mm	6.7 - 7.2” / 170 - 183 mm
L (8)	7.4 - 8” / 190 - 204 mm	7.3 - 7.7” / 185 - 195 mm
XL (9)	8 - 8.3” / 205 - 210 mm	7.7 - 8” / 196 - 205 mm

YOUTH SIZE	HAND WIDTH	HAND LENGTH
XS (3)	5.2 - 5.6” / 133 - 142 mm	5.9 - 6” / 150 - 154 mm
S (4)	5.6 - 5.9” / 143 - 152 mm	6 - 6.3” / 155 - 159 mm
M (5)	6 - 6.4” / 153 - 162 mm	6.3 - 6.5” / 160 - 165 mm
L (6)	6.4 - 6.8” / 163 - 172 mm	6.5 - 6.7” / 165 - 169 mm

SOCK SIZE GUIDE

SOCK SIZE	EU SHOE	MENS US SHOE
S	36 - 39	4 - 6.5
M	40 - 42	7.5 - 9
L	43 - 45	9.5 - 11
XL	46 - 48	12 - 13.5

FOOTWEAR SIZE CONVERSIONS

EU SIZE	US MENS	US WOMENS
36	-	5
37	-	6
37.5	-	6.5
38	-	6.5
38.5	-	7
39	6.5	7.5
39.5	7	8
40	7.5	8.5
40.5	7.5	8.5
41	8	9
41.5	8.5	9.5
42	9.5	10.5
42.5	9.5	10.5
43	9.5	10.5
43.5	10	-
44	10.5	-
44.5	11	-
46	12	-
46.5	12.5	-
47	13	-
48	13.5	-
49	14	-
50	15	-