The Giro Ratio™ Mips® helmet offers everything you need on the mountain: Thermostat Control adjustable ventilation, Mips® technology, and a relaxed style. Under the understated shape is the In Form system for precise sizing and Outdoor Tech audio compatibility (sold separately).
- One-button ventilation control
Thermostat Control allows you to adjust airflow instantly with a discreet button on the outside of the helmet. - Mips® protection
The integrated Mips® system can reduce rotational forces transmitted to the brain in some impacts by redirecting the impact energy.
- Hard shell with EPS liner
- Stack Vent anti-fogging
- Vertical adjustment without “gaper gap”
- In Form system, 6 cm range
- Compatible with Outdoor Tech audio
Specifications:
Certification: CE EN1077
Weight: 600 g (size M)
Material: 45 % ABS, 21 % EPS, 4 % PC, 16 % polyester, 11 % nylon, 2 % POM, 1 % steel
Construction: Hard Shell
Adjustment system: In Form Fit System with wheel in the back of the helmet
Ventilation: Thermostat Control, Stack Vent
Science and soul. They might seem like two disparate entities - but through the 30-year history of the Giro brand, they have been brought together in equal measure. Giro benefits from world-class resources. Based in Santa Cruz, California, it's an action sports paradise - incredible waves for surfers, endless singles for bikers and coastline-lined roads for roadies.
At Giro's headquarters, you'll find over 50 different helmet testers, several 3D printers, a custom wind tunnel, and even a Therminator test head equipped with thermal sensors to test helmet venting and hole placement. Giro has a lot of products in many categories, from helmets to gloves to trunks. But each one was born out of a desire to enhance your riding experience.
Gloves
| Group | Size | Hand circumference (cm) | Palm length (cm) |
| Men's | extra small (6) | 16–17,8 | 15–16,4 |
| S (7) | 17,9–20 | 16,5–17,9 | |
| M (8) | 20,1–21,9 | 18–19,4 | |
| L (9) | 22–23,4 | 19,5–20,4 | |
| Extra Large (10) | 23,5–24,9 | 20,5–21,9 | |
| Extra-extra-large (11) | 25–26,5 | 22–23,5 | |
| Extra-Extra-Large (12) | 26,5–27 | 23,5–24,5 | |
| Women's | S (6) | 15,5–16,9 | 16–16,9 |
| M (7) | 17–18,9 | 17–18,3 | |
| L (8) | 19–20,4 | 18,5–19,5 | |
| Extra Large (9) | 20,5–21 | 19,6–20,5 | |
| Children's | extra small (3) | 13,3–14,2 | 15–15,4 |
| S (4) | 14,3–15,2 | 15,5–15,9 | |
| M (5) | 15,3–16,2 | 16–16,5 | |
| L (6) | 16,3–17,2 | 16,5–16,9 |
Running Shoes – EU / US / UK / Foot Length (cm)
| Group | EU | 36 | 36,5 | 37 | 37,5 | 38 | 38,5 | 39 | 39,5 | 40 | 40,5 | 41 | 41,5 | 42 | 42,5 | 43 | 43,5 | 44 | 44,5 | 45 | 45,5 | 46 | 46,5 | 47 | 47,5 | 48 | 49 | 50 |
| Women's | US | 5 | 5,5 | 6 | 6,5 | 6,5 | 7 | 7,5 | 8 | 8,5 | 8,5 | 9 | 9,5 | 10 | 10,5 | 10,5 | – | – | – | – | – | – | – | – | – | – | – | – |
| UK | 3 | 3½ | 4 | 4½ | 4¾ | 5 | 5½ | 6 | 6½ | 6¾ | 7 | 7½ | 8 | 8½ | 8¾ | – | – | – | – | – | – | – | – | – | – | – | – | |
| Length (cm) | 23 | 23,2 | 23,5 | 24 | 24,2 | 24,5 | 25 | 25,2 | 25,5 | 26 | 26,2 | 26,5 | 27 | 27,2 | 27,5 | – | – | – | – | – | – | – | – | – | – | – | – | |
| Men's | US | – | – | – | – | – | – | – | – | 7,5 | 7,5 | 8 | 8,5 | 9 | 9,5 | 9,5 | 10 | 10,5 | 11 | 11,5 | 11,5 | 12 | 12,5 | 13 | 13,5 | 13,5 | 14,5 | 15 |
| UK | – | – | – | – | – | – | – | – | 6½ | 6¾ | 7 | 7½ | 8 | 8½ | 8¾ | 9 | 9½ | 10 | 10¼ | 10½ | 11 | 11½ | 12 | 12¼ | 12½ | 13½ | 14 | |
| Length (cm) | – | – | – | – | – | – | – | – | 25,5 | 26 | 26,2 | 26,5 | 27 | 27,2 | 27,5 | 28 | 28,2 | 28,5 | 29 | 29,2 | 29,5 | 30 | 30,2 | 30,5 | 31 | 31,5 | 32 |
Socks
| Size | S | M | L | XL |
| EU | 36–39 | 40–42 | 43–45 | 46–48 |
Men's T-shirts / jerseys / jackets / shorts / pants
* Waist size (T-shirts) – T-shirts, jerseys, jackets. Waist size (pants) and hip size – shorts and pants. The numerical size in parentheses corresponds to the waist size in inches.
| Size | Extra Small (28) | S (30) | I am 32 years old. | L (34) | Extra Large (36) | Extra-extra-large (38) | Extra Extra Large (40) |
| Chest (cm) | 83,8–88,9 | 88,9–94 | 96,5–101,6 | 104,1–109,2 | 111,8–116,8 | 119,4–124,5 | 127–132,1 |
| Waist – T-shirts (cm) * | 68,6–73,7 | 73,7–78,7 | 78,7–83,8 | 83,8–88,9 | 88,9–94 | 94–99,1 | 99,1–104,1 |
| Waist – pants (cm) * | 83,8–88,9 | 88,9–94 | 96,5–101,6 | 101,6–106,7 | 106,7–111,8 | 111,8–116,8 | 116,8–121,9 |
| Hips – pants (cm) * | 68,6–73,7 | 73,7–78,7 | 78,7–83,8 | 83,8–88,9 | 88,9–94 | 94–99,1 | 99,1–104,1 |
Women's T-shirts / jerseys / jackets / shorts / pants
* Chest, waist (T-shirts) – T-shirts, jerseys, jackets. Waist (pants) and hips – shorts and pants.
| Size | XXS | XS | S | M | L | XL | XXL | XXXL |
| Chest (cm) | 76,2–78,7 | 81,3–83 | 86,4–88,9 | 91,4–94 | 96,5–99,1 | 99,1–104,1 | 104,1–109,2 | – |
| Waist – T-shirts (cm) * | 55,9–61 | 61–66 | 66–71,1 | 71,1–76,2 | 76,2–81,3 | 81,3–86,4 | 86,4–91,4 | – |
| Waist – pants (cm) * | – | 81,3–86,4 | 86,4–91,4 | 91,4–96,5 | 96,5–101,6 | 101,6–106,7 | 106,7–111,8 | 111,8–116,8 |
| Hips – pants (cm) * | – | 55,9–61 | 61–66 | 66–71,1 | 71,1–76,2 | 76,2–81,3 | 81,3–86,4 | 86,4–91,4 |
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