A quick overview video of the fully licensed PTS MTEK Flux Helmet for airsoft use by Extreme Airsoft Rhode Island... "The PTS MTEK FLUX replica helmet is an extremely high fidelity replica featuring a high quality, properly textured, and accurately colored high strength polymer shell. The high quality, extremely comfortable foam inserts are reconfigurable and, along with the fully adjustable chin strap system, allow this one helmet to fit almost all head sizes. Like the real MTEK FLUX, it uses a boltless shell for the FLUX accessory rails and accurately spec’ed NVG mount. The FLUX accessory rails are fully MLOK compatible which allows for a multitude of attachments that are available on the market."