The Jackson helmet features a modern profile and the new Passive Aggressive Venting system, inspired by the aerodynamics of luxury cars. The hidden but powerful system directs airflow and regulates temperature during descents, uphill climbs and stops. The design is completed by a subtle badge and the helmet is compatible with all Giro goggles.
- Smart ventilation without compromise
The Passive Aggressive Venting system efficiently directs air and maintains a comfortable temperature, whether you are riding, climbing or standing still. Stack Ventilation also supports goggle ventilation. - Higher protection against rotational forces
MIPS technology is a slippery liner between the EPS shell and the inner padding. In the event of an angled impact, the helmet shell rotates a few millimeters independently of the head, significantly reducing the rotational force transmitted to the brain.
- Passive Aggressive Venting system
- MIPS protection
- In Form Fit 2 adjustment system
- Vertical Tuning adjustment
- Polartec Power Grid padding
Specifications:
Construction: In-Mold, direct injection of EPS foam into a polycarbonate shell
Protection system: MIPS (Multi-Directional Impact Protection System)
Standard: CE EN 1077
Adjustment system: In Form Fit 2, 6 cm range, ergonomic wheel adjustment
Vertical adjustment: Vertical Tuning
Ventilation: Passive Aggressive Venting, Stack Ventilation (supports goggle ventilation)
Badge: yes
Compatibility: all Giro goggles
Padding: Polartec Power Grid
Sizes: S (52-55.5 cm), M (55.5-59 cm), L (59-62.5 cm)
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 |







