Louis Garneau Envoy Helmet. Features Bonded Polystyrene, Ergobuckle, Keylock levers, Airdry Fusion padset and Spiderlock 2 fit system. Ringlock and V-Pro visor. Weight: 9.6oz/272 g Certifications: ASTM-CPSC Vents: 23 Bag Included Free replacement 1 year warranty Sizes: S-M-L

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Small 6 3/4 - 7

- 54-56cm

- 21.25" - 22" Medium 7 - 7 1/4

- 56-58cm

- 22" - 22.75" Large 7 1/4 - 7 1/2

- 58-60cm

- 22.75" - 23.62"