ALPINESTARS SM3 Helmet - Heat - Gloss Red/White/Black - Medium 8301026-3126-M BDL Double pouch design with UV

Double pouch design with UV stabilized clear face allows access to cell phone screens or GPS display

S M L XL Width (inches) 15 1/4 16 1/4 17 1/4 18 1/4 Length (inches) 20 7/8 22 1/8 23 3/8 24 3/8

5" / 38mm Voice Coil Former Material  Kapton Winding Material  Aluminum  Diaphragm Material Polyimide Magnet Material Neodymium (N38H） Magnet Weight 2

Woven clamp label on back

Includes a 12" wide integrated mesh storage pocket

ALPINESTARS SM3 Helmet - Heat - Gloss Red/White/Black - Medium 8301026-3126-M BDL Double pouch design with UVVaried thickness shell construction for optimized protection and light weight 6 piece EPS liner with three different densities Polished inner EPS liner with special coating to reduce friction with comfort liner for rotational impact management One outer shell and two inner EPS liner sizes, with optional + 5 mm cheek pads for a tailor made fit Breakaway visor