We worked with the big boss at SE Bikes, Todd Lyons, to design these 2 Helmets. 

S1 Lifer Helmet  Color: Black Matte / SE Bikes 

Sizes: S (20.5"), M (21"), L (21.5"), XL (22")

&

S1 Retro Lifer Helmet Color: Brown / SE Bikes / Wings

Sizes: S (20.5"), M (21"), L (21.5"), XL (22")