Sunrimoon CS-07 Zeta Bike Helmet - Classic Black Size:M (54-57cm) XS S M ML L

XS S M ML L XL A SEAT TUBE LENGTH (mm) 425 445 470 500 530 560 B SEAT TUBE ANGLE 74

Avoid contact with eyes

25″ and 2″ with adapter

For tyres larger than 29x2

New high-gloss compression fabric for comfortable wrapping

Sunrimoon CS-07 Zeta Bike Helmet - Classic Black Size:M (54-57cm) XS S M ML LCS 07 ZETA The seven air inlets at the front end and the seven exhaust vents at the rear work in tandem to effectively equalize the air flow ratio. the helmet is reserved for the tail safety warning light interface (optional), which can significantly improve the safety of night riding. Ride in the bold color of ZETA and let every mile reflect resilience and power. 3D GRID Elastic Matrix System This system uses a 3D GRID, a "dense soft supporting body"