Description comes direct from 509 website:
Designed to be worn comfortably under your 509 helmet, the Lightweight Pro Balaclava offers breathable, quick-drying protection for high-intensity days, milder conditions, and riders who run hot. Stretch performance and contoured shaping ensures total coverage and freedom of movement. Breathable vent panels around the mouth prevent fogging. Added length at the neck keeps this balaclava tucked into your base layer all day.
Breathable, stretchable polyester
Sublimation graphics printing
Lightweight for basic cold weather protection
WARNING for California Residents
Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
What is Proposition 65? "Proposition 65 requires businesses to provide warnings to Californians about significant exposures to chemicals that cause cancer, birth defects or other reproductive harm. These chemicals can be in the products that Californians purchase, in their homes or workplaces, or that are released into the environment. By requiring that this information be provided, Proposition 65 enables Californians to make informed decisions about their exposures to these chemicals." To find out more, visit https://www.p65warnings.ca.gov.