9.5/10 condition. Used 6 times, payed 250 looking for 200 obo.
Here is what the interweb says,
Icon Airmada Stack Helmet
Ride the Lightning may have put metal up yerass, but the Stack will put thunder in your soul. Boom! As serious as a duo-toned seizure, the Stack riffs a feedback induced hymn of epic loudness. You do not compute, and neither does this graphic.
All world standard, meets or exceeds the following: Dot fmvss 218(us), ece 22-05(europe), sai as1698 (australia) & sg(japan) Safety and testing standards. Does not ship with sai or sg certification Stickers unless purchased from an authorized dealer in that country.
Injection molded polycarbonate shell for strength and durability
Recessed twin channel supervent with industry leading intake and exhaust ports for increased cooling
Fog-Free icon optics shield with prolock shield locking system
Adjustable chin and forehead venting system maintains continual temperature for increased comfort in any riding situation
Rapid release shield change system
Removable molded breath deflector helps prevent fogging
Fully removable washable hydradry moisture wicking interior
Easy adjust ergo vent switch for superior airflow control
Available in four shell sizes with an icon exclusive long oval headform for ultimate fit and comfort