AFX helmet liners and cheek pads are made with a hypoallergenic and antimicrobial moisture wicking nylon, most of which are removable and washable. The size of this helmet is based on a combination of four factors: outer shell size, inner EPS thickness, comfort liner thickness and cheek pad thickness. The fit of the helmet can be customized by replacing your existing cheek pads with thinner cheek pads (for a looser fit) or thicker cheek pads (for a tighter fit). The fit can also be customized by replacing your existing comfort liner with a thinner comfort liner (for a looser fit) or thicker comfort liner (for a tighter fit). Specifications: - This helmet model meets or exceeds both ECE 22.05 and DOT FMVSS-218 motorcycle helmet safety standards - Retention system is Microlock (quick release) - Provides ample ear cavity space for most speaker systems - There are 4 tinted shields available for this model - A clear coat finish to protect paint & graphics - A large-size FX-41DS weighs 1.68 kg or 3.69 lbs Technology: - SHELL DESIGN An aerodynamic shell design constructed using an advanced lightweight composite poly-alloy - FACE SHIELD A flush-fit, quick release screw on face shield that is optically correct, compound-curved, scratch-resistant and protects against UV-rays. Shield can be removed to allow open face riding or for use with most goggles - VENTILATION 11 points of ventilation with chin, side, forehead, top and rear vent. 3 intake vents and 8 exhaust vents - VISOR A removable and adjustable (50mm) screw-on visor