The Radix™ MIPS® helmet combines rugged style and durability to meet the demands of core trail riders, with the coverage, light weight, and ventilation riders need to ride comfortably and confidently all day. The Radix™ MIPS® helmet is for the rugged adventurer who appreciates a perfect fit, the sun staying out of their eyes, and plenty of ventilation.
The highly adjustable Roc Loc® 5.5 Mips system allows you to customize fit and feel for enhanced stability and long-range comfort while providing an added measure of protection from rotational forces in the event of an angled impact. The P.O.V. visor offers 15 degrees of adjustment, and the tough polycarbonate outer shell is fused permanently to the EPS foam liner using our In-Mold™ construction process, to enhance durability and ventilation without excess bulk.
INTEGRATED MIPS®
All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards. The goal of Giro's Integrated MIPS®-equipped helmets is to reduce rotational forces while enhancing fit and comfort by combining the MIPS slip plane with the helmet's adjustable fit system. Giro believes that helmets equipped with this technology can reduce the amount of rotational force that may be transferred to rider's brain in certain impacts. Learn more about MIPS in the video above.
HARDSHELL WITH IN-MOLD HARDBODY™ LOWER WRAP
The two-piece shell combines a tough outer hard shell with a polycarbonate lower shell permanently fused to the liner for durability without excess weight.
P.O.V. VISOR
Our P.O.V. visor features an adjustment mechanism that lets you move the visor up and down in indexed steps. These steps include three riding positions plus a high position for goggle storage above your brow. The design allows you to easily adjust your visor with one hand while riding.
ROC LOC® 5 FIT SYSTEM
The industry benchmark in comfort, stability, adjustability and weight savings. In addition to enhancing the fit and comfort of helmets, Roc Loc® 5 allows you to easily custom tune the fit tension and the fore-aft tilt of the helmet in seconds using a single hand. And it's lighter than comparable systems too, making it the ultimate in skull-hugging luxury.
WIND TUNNEL VENTILATION
Giro helmets are developed utilizing our proprietary Wind Tunnel ventilation system. This elaborate design combines active vents in the helmet's shell with exhaust channels inside the helmet that thrust fresh, cool air over and around the rider's head while forcing heat and stale air out. It's the most effective cooling system available, and a difference you can feel every time you ride.
|
IMPACT MANAGEMENT |
INTEGRATED MIPS |
|
CONSTRUCTION |
FULL-WRAP IN-MOLD POLYCARBONATE SHELL WITH EPS LINER |
|
VENTILATION |
WIND TUNNEL VENTS WITH INTERNAL CHANNELING |
|
FIT SYSTEM |
ROC LOC® 5.5 MIPS® |
|
WEIGHT |
316G (SIZE MEDIUM CPSC)|300G (SIZE MEDIUM CE) |
|
CERTIFICATION |
COMPLIES WITH THE US CPSC SAFETY STANDARD FOR BICYCLE HELMET FOR PERSONS AGE 5 AND OLDER E.U.: CE EN1078 |
|
HIGHLIGHTS |
P.O.V. ADJUSTABLE VISOR QUICK DRY PADDING SLIMLINE WEBBING |
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|
ADULT SUPER FIT BIKE HELMET SIZE |
CIRCUMFERENCE |
|
S |
51 - 55 cm |
|
M |
55 - 59 cm |
|
L |
59 - 63 cm |
|
XL |
63 - 65 cm |
|
YOUTH BIKE HELMETSIZE |
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 BIKE HELMET |
CIRCUMFERENCE |
|
S |
51 - 53 cm |
|
M |
51 - 55 cm |
|
L |
55 - 59 cm |
|
XL |
59 - 63 cm |
|
ADULT UNIVERSAL BIKE HELMET |
CIRCUMFERENCE |
|
Women Adult |
50 - 57 cm |
|
Unisex |
54 - 61 cm |
|
Extra Large |
58 - 65 cm |
SNOW HELMET SIZE GUIDE
|
ADULT SNOW HELMET SIZE |
CIRCUMFERENCE |
|
S |
52 - 55.5 cm |
|
M |
55.5 - 59 cm |
|
L |
59 - 62.5 cm |
|
XL |
62.5 - 65 cm |
|
YOUTH SNOW HELMET SIZE |
CIRCUMFERENCE |
|
XS |
48.5 - 52 cm |
|
S |
52 - 55.5 cm |
|
M |
55.5 - 59 cm |
MEN’S TOPS SIZE GUIDE
|
SIZE |
CHEST |
WAIST |
|
XS |
33 - 35” / 83.8 - 88.9 cm |
27 - 29” / 68.6 - 73.7 cm |
|
S |
35 - 37” / 88.9 - 94 cm |
29 - 31” / 73.7 - 78.7 cm |
|
M |
38 - 40” / 96.5 - 101.6 cm |
31 - 33” / 78.7 - 83.8 cm |
|
L |
41 - 43” / 104.1 - 109.2 cm |
33 - 35” / 83.8 - 88.9 cm |
|
XL |
44 - 46” / 111.8 - 116.8 cm |
35 - 37” / 88.9 - 94 cm |
|
XXL |
47 - 49” / 119.4 - 124.5 cm |
37 - 39” / 94 - 99.1 cm |
|
XXXL |
50 - 52” / 127 - 132.1 cm |
39 - 41” / 99.1 - 104.1 cm |
WOMEN’S TOPS SIZE GUIDE
|
SIZE |
CHEST |
WAIST |
|
XXS |
30 - 31” / 76.2 - 78.7 cm |
22 - 24” / 55.9 - 61 cm |
|
XS |
32 - 33” / 81.3 - 83. cm |
24 - 26” / 61 - 66 cm |
|
S |
34 - 35” / 86.4 - 88.9 cm |
26 - 28” / 66 - 71.1 cm |
|
M |
36 - 37” / 91.4 - 94 cm |
28 - 30” / 71.1 - 76.2 cm |
|
L |
38 - 39” / 96.5 - 99.1 cm |
30 - 32” / 76.2 - 81.3 cm |
|
XL |
39 - 41” / 99.1 - 104.1 cm |
32 - 34” / 81.3 - 86.4 cm |
|
XXL |
41 - 43” / 104.1 - 109.2 cm |
34 - 36” / 86.4 - 91. 4cm |
MEN’S BOTTOMS SIZE GUIDE
|
SIZE |
HIP |
WAIST |
|
28 (XS) |
33 - 35” / 83.8 - 88.9 cm |
27 - 29” / 68.6 - 73.7 cm |
|
30 (S) |
35 - 37” / 88.9 - 94 cm |
29 - 31” / 73.7 - 78.7 cm |
|
32 (M) |
38 - 40” / 96.5 - 101.6 cm |
31 - 33” / 78.7 - 83.8 cm |
|
34 (L) |
40 - 42” / 101.6 - 106.7 cm |
33 - 35” / 83.8 - 88.9 cm |
|
36 (XL) |
42 - 44” / 106.7 - 111.8 cm |
35 - 37” / 88.9 - 94 cm |
|
38 (XXL) |
44 - 46” / 111.8 - 116.8 cm |
37 - 39” / 94 - 99.1 cm |
|
40 (XXXL) |
46 - 48” / 116.8 - 121.9 cm |
39 - 41” / 99.1 - 104.1 cm |
WOMEN’S BOTTOMS SIZE GUIDE
|
SIZE |
HIP |
WAIST |
|
XS |
32 - 34” / 81.3 - 86.4 cm |
22 - 24” / 55.9 - 61 cm |
|
S |
34 - 36” / 86.4 - 91.4 cm |
24 - 26” / 61 - 66 cm |
|
M |
36 - 38” / 91.4 - 96.5 cm |
26 - 28” / 66 - 71.1 cm |
|
L |
38 - 40” / 96.5 - 101.6 cm |
28 - 30” / 71.1 - 76.2 cm |
|
XL |
40 - 42” / 101.6 - 106.7 cm |
30 - 32” / 76.2 - 81.3 cm |
|
XXL |
42 - 44” / 106.7 - 111.8 cm |
32 - 34” / 81.3 - 86.4 cm |
|
XXXL |
44 - 46” / 111.8 - 116.8 cm |
34 - 36” / 86.4 - 91.4 cm |
|
MEN'S GLOVE 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 - 21 9mm |
|
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 GLOVE 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 - 18 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 GLOVE 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 |
- |
