Sunrimoon CS-07 Zeta Bike Helmet - Classic White Size:M (54-57cm) or Super Tacky options

or Super Tacky options

MODEL NO CS-R9200-12 SERIES DURA-ACE R9200 Series Average weight 223 (11-30T) 253 (11-34T) Type HYPERGLIDE+

0mm (FlexTight SP-11) Water resistant：IPX4 Other：Clothing clip included

and be virtually clog proof

CASSETTE INTERFACE: Sram XDR

Sunrimoon CS-07 Zeta Bike Helmet - Classic White Size:M (54-57cm) or Super Tacky optionsCS 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"