Troy Lee Designs - SE4 Polyacrylite Carb MIPS HelmetWeighing in at 1500 grams, our SE4 Polyacrylite Helmet comes with MIPS, incorporating brain rotational protection.This helmet comes with 16 intake ports to channel cool air around and over a riders head, forcing hot sweaty air out through six rear exhaust ports.The SE4 Polyacrylite is DOT & ECE 22.05 Certified.This helmet is designed and intended exclusively for off-road dirt bike riding.MIPS brain protection systemEPP (Expanded PolyPropylene) chin barThree shell sizes to more accurately fit a variety of head sizes and rider agesAnatomical 3D contoured cheek pads with emergency release system for EMS respondersPlastic visor screws and brass inserts for easy impact break-awayStainless steel D-ringsComes with TLD helmet drawstring sock.