If relentless performance and style is what you're after, then you'll get it with the Giro Seyen MIPS Bicycle Helmet.  The Giro Seyen MIPS Bicycle Helmet has a slim design, a luxurious fit, and highly-adjustable fit system that will let you focus on what you do best, the ride!

Specs

• Construction - Full-wrap in-mold polycarbonate shell with eps liner; four polycarbonate hardbodies
• Ventilation - 25 Wind Tunnel Vents with Internal Channeling
• Fit System - Roc Loc 5 Air MIPS
• Product Weight - 340grams (size medium cpsc) 
• Certification - Complies with the US CPSC Safety Standard for Bicycle Helmet for persons age 5 and Older.
• Highlights - Ionic anti-microbial padding; featherweight webbing with Slimline Buckle