LS2 HH590 Rebellion HelmetLike any worthy rebel, the LS2 Rebellion Helmet stands alone and charts its own course. With a stylish shell made of high performance, lightweight Kinetic Polymer Alloy (KPA), the Rebellion has just the right blend of retro-cool with a technical edge.Imagine a half-shell motorcycle helmet that offers flow-through, ported ventilation to keep you cool on the hottest days. The short peak and Twin Shield System drop down sun shield will protect your eyes when the sun is in the horizon. The sun shield itself has unique, two-stage adjustability: lock it half way for just a little shade or full open for total sun protection.The dual-density EPS meets / exceeds DOT standards for 50 state legal protection. The LS2 Rebellion Helmet is finished off with a micrometric A micrometric fastener is an adjustable fastener commonly used in helmets, pants, boots, etc. Also known as "micro ratchet" or just plain "ratchet fastener", the system uses a spring-loaded ratchet mechanism that interlocks with an opposing strip of toothed metal or plastic. It is best known for its ease of adjustment - especially with gloved hands. In helmets, it takes the place of the classic double D-ring closure. , quick release chin-strap and set up for easy and seamless installation of the LS2 LinkIn Bluetooth communication system by Sena (sold separately). If youre the type who sets your own course, the LS2 Rebellion Helmet was designed for you.Features: Kinetic Polymer Alloy (KPA) shell 2 shell sizes (XS-LG and XL-2XL) Multi-density EPS Adjustable Twin Shield System drop-down dark smoke sun shield Sun shield is UV- and scratch-resistant Micrometric quick release chin strap Flow-through ventilation with channeled port and top vent Technical fabric liner is hypoallergenic, moisture wicking, removable and washable Laser-cut foam LinkIn Ride Pal by Sena ready (sold separately) DOT approved