Listing description is direct from 509 website:
For riders who require maximum grip and dexterity, the new 509 Factor Pro Gloves are the answer. Rugged full-grain goat leather palms protect and form to the shape of your hands for unmatched grip on the bars. Wind and water-resistant softshell material on the back of hand and between the fingers stretches while you pin the throttle. The stretchy neoprene cuff comfortably locks this low-profile, uninsulated glove around your wrist for all day protection.
Full Grain Goat leather protects and provides great grip
Softshell materials used on back of hand and forchettes for weather and wind resistance
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.