International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Tech 10 Supervented Støvler | Alpinestars | Alpinestars® Official Site Motorcycle Racing Boots Tech 10 Supervented - Rood Laarzen MX | Alpinestars Ventilated Motoross Boots In lab testing, Alpinestars states that the Tech 10 Supervented dissipates 34% more heat than a non-vented boot. And all of this venting has been incorporated without compromising the safety or fit of the boot. Starting with fit, the Tech 10 Supervented boots are the best-fitting boot I've ever worn Featuring two inlet ports on the front, a ventilated shinplate, perforated padding and extensive mesh sections, the Tech 10 Supervented has been designed for maximum airflow through the boot's front and effective heat exchange. alpinestars Alpinestars Tech 10 Supervented Featuring two inlet ports on the front, a ventilated shinplate, perforated padding and extensive mesh sections, the Tech 10 Supervented has been designed for maximum airflow through the boot’s front and effective heat exchange.