PB SNC2: Super fiber and other special synthetic fibers, with excellent characteristics of flexibility and tensile strength. The newly developed resin creates stronger and less-weight bonds between the shell materials. Optimal ventilation: Large ducts, grids and openings facilitate ventilation that is activated through large buttons, which can be easily handled, even with thick gloves. This advanced ventilation system makes the new QV-Pro the perfect helmet for all types of driving in the face of any inclement weather. EcoPure Quilts: The fully detachable interior padding system has been enhanced with the new EcoPure material, which helps to maintain neutral levels of acidity close to those of human skin and with antibacterial properties. In order to make the adjustment softer, deeper and even more comfortable, a new, softer material has been developed for the liner frame. The new lining also features an adjustable temple pad that allows for a personalized fit. Comfortable speaker pocket: The QV-Pro has special pockets that leave room for speaker mounting without affecting comfort or fit. (No speakers included) Mouthpiece: The underside of the helmet has a new cloth attached to cover the chin area which, in addition, accentuates the oval shape. 5 mm drop-down: Removable foam layer 5 mm thick located on the earmuffs and cheek and temple pads. It allows to have more space without the need to resort to the optional purchase of a lining or new pads or earmuffs.