All-Weather Ear Tag marker has specially formulated inks to last on all brands and styles of polyurethane plastic ear tags without fading from UV light and harsh weather conditions. The ink is designed to actually penetrate and bind with the plastic ear tag to provide the longest lasting marks possible. Packaged in a valve-actuated metal pen will not dry out like felt tip markers.

⚠️WARNING: This product can expose you to chemicals including 4-methylpentan-2-one, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to