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Giro Ionos Road Bicycle Helmets

Simply put, Ionos is the most technologically advanced road cycling helmet Giro has ever created. And the most beautiful. And the most ventilated. 21 enormous Wind Tunnel Vents and optimally placed internal exhaust channels maximize air flow across your head, ensuring that you stay cool on the hottest days and over the longest climbs.


Giro Ionos Road Bicycle Helmet - BlackGiro Ionos Road Bicycle Helmet - Black
  • In-Mold
  • Roc Loc® 4
  • In-Mold Carbon Reinforcement, Roll Cage™
  • 21 Wind Tunel™ vents, internal channeling
  • Weight: 9.5 oz; 275 grams
  • Sizing: Super Fit™
    • Small: 51-55 cm; 20"-21.75"
    • Medium: 55-59 cm; 21.75" - 23.25"
    • Large: 59-63 cm; 23.25" - 24.75"
  • Glossary of Terms
  • Your price: $225.00
  • Truly Free Shipping / No Handling Fee on orders over $100.00

Sizing Chart Size:   Quantity:        $225.00 US

Giro Ionos Road Bicycle Helmet - Cassie d'Epargne Red/BlackGiro Ionos Road Bicycle Helmet - Cassie d'Epargne Red/Black
  • In-Mold
  • Roc Loc® 4
  • In-Mold Carbon Reinforcement, Roll Cage™
  • 21 Wind Tunel™ vents, internal channeling
  • Weight: 9.5 oz; 275 grams
  • Sizing: Super Fit™
    • Small: 51-55 cm; 20"-21.75"
    • Medium: 55-59 cm; 21.75" - 23.25"
    • Large: 59-63 cm; 23.25" - 24.75"
  • Glossary of Terms
  • Your price: $225.00
  • Truly Free Shipping / No Handling Fee on orders over $100.00

Sizing Chart Size:   Quantity:        $225.00 US

Giro Ionos Road Bicycle Helmet - Crystal Blue/WhiteGiro Ionos Road Bicycle Helmet - Crystal Blue/White
  • In-Mold
  • Roc Loc® 4
  • In-Mold Carbon Reinforcement, Roll Cage™
  • 21 Wind Tunel™ vents, internal channeling
  • Weight: 9.5 oz; 275 grams
  • Sizing: Super Fit™
    • Small: 51-55 cm; 20"-21.75"
    • Medium: 55-59 cm; 21.75" - 23.25"
    • Large: 59-63 cm; 23.25" - 24.75"
  • Glossary of Terms
  • Your price: $225.00
  • Truly Free Shipping / No Handling Fee on orders over $100.00

Sizing Chart Size:   Quantity:        $225.00 US

Giro Ionos Road Bicycle Helmet - BlackGiro Ionos Road Bicycle Helmet - Discovery Blue/Black
  • In-Mold
  • Roc Loc® 4
  • In-Mold Carbon Reinforcement, Roll Cage™
  • 21 Wind Tunel™ vents, internal channeling
  • Weight: 9.5 oz; 275 grams
  • Sizing: Super Fit™
    • Small: 51-55 cm; 20"-21.75"
    • Medium: 55-59 cm; 21.75" - 23.25"
    • Large: 59-63 cm; 23.25" - 24.75"
  • Glossary of Terms
  • Your price: $225.00
  • Truly Free Shipping / No Handling Fee on orders over $100.00

Sizing Chart Size:   Quantity:        $225.00 US

Giro Ionos Road Bicycle Helmet - Rabobank Orange/Blue Limited EditionGiro Ionos Road Bicycle Helmet - Rabobank Orange/Blue Limited Edition
  • In-Mold
  • Roc Loc® 4
  • In-Mold Carbon Reinforcement, Roll Cage™
  • 21 Wind Tunel™ vents, internal channeling
  • Weight: 9.5 oz; 275 grams
  • Sizing: Super Fit™
    • Small: 51-55 cm; 20"-21.75"
    • Medium: 55-59 cm; 21.75" - 23.25"
    • Large: 59-63 cm; 23.25" - 24.75"
  • Glossary of Terms
  • Your price: $225.00
  • Truly Free Shipping / No Handling Fee on orders over $100.00

Sizing Chart Size:   Quantity:        $225.00 US

Giro Ionos Road Bicycle Helmet - White/SilverGiro Ionos Road Bicycle Helmet - White/Silver
  • In-Mold
  • Roc Loc® 4
  • In-Mold Carbon Reinforcement, Roll Cage™
  • 21 Wind Tunel™ vents, internal channeling
  • Weight: 9.5 oz; 275 grams
  • Sizing: Super Fit™
    • Small: 51-55 cm; 20"-21.75"
    • Medium: 55-59 cm; 21.75" - 23.25"
    • Large: 59-63 cm; 23.25" - 24.75"
  • Glossary of Terms
  • Your price: $225.00
  • Truly Free Shipping / No Handling Fee on orders over $100.00

Sizing Chart Size:   Quantity:        $225.00 US

Giro Ionos Road Bicycle Helmet - Yellow/WhiteGiro Ionos Road Bicycle Helmet - Yellow/White
  • In-Mold
  • Roc Loc® 4
  • In-Mold Carbon Reinforcement, Roll Cage™
  • 21 Wind Tunel™ vents, internal channeling
  • Weight: 9.5 oz; 275 grams
  • Sizing: Super Fit™
    • Small: 51-55 cm; 20"-21.75"
    • Medium: 55-59 cm; 21.75" - 23.25"
    • Large: 59-63 cm; 23.25" - 24.75"
  • Glossary of Terms
  • Your price: $225.00
  • Truly Free Shipping / No Handling Fee on orders over $100.00

Sizing Chart Size:   Quantity:        $225.00 US


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