The Sphere helmet is your companion on the road. Available in 4 sizes and created with our Advanced Rollsys ® fit system, we want to give you maximum comfort in a helmet that fits perfectly. With 18 intake and exhaust vents connected by carefully designed channels for airflow from the front to the back of your head, keeping you cool and allowing you to perform at your best throughout your ride. On rainy days, the Sphere can be combined with the Aeroshell, available as an accessory, to protect you from the elements. Comfort is guaranteed with an in-mold construction, with details that include: Goggle attachment system Slimmer straps. Reflective stickers. And a really comfortable back design for long hair.