Lazer Genesis MIPS Cycling Helmet The Genesis is the lightest helmet Lazer has ever made. So light you'll forget it's even there! Featuring a superlight version of our Advanced Rollsys System and an adjustable head basket for a perfect fit every time. Fully ventilated for maximum cooling. Includes Race or Comfort pads to enhance comfort. Specifications: Gender: Unisex Color: Black Outer shell material: Polycarbonate Inner shell material: EPS foam Ventilation: 22 vents Adjustable head basket: Yes Weight: 195 grams Head circumference: 55-59 cm Size: M