Weighing in at 1350 grams, the SE4 Youth Polyacrylite Helmet comes with MIPS, incorporating brain rotational protection. This helmet comes with 16 intake ports to channel cool air around and over a rider's head, forcing hot sweaty air out through 12 rear exhaust ports. Durable, lightweight polyacrylite shell reduces cost without compromising rider safety MIPS brain protection system, reduces rotational forces to the brain EPP (Expanded Polypropylene) chin bar for lightweight, durable protection Youth specific EPS (Expanded Polystyrene) to accurately fit a variety of youth head sizes Anatomical 3D contoured cheek pads with emergency release system for EMS responders Plastic visor screws and brass inserts for easy impact break away Stainless steel d-rings are both light and strong Comes with TLD helmet drawstring sock