I have 5 or 6 Black Diamond Half Dome helmets that have been recently retired. They are approximately 7 years old. They were used at a high ropes course and are in good-to-fair condition, basically intact and in usable form - chin straps are good. If you are needing one for a beginner, child, or just a spare for that friend who is always borrowing your stuff, they're at no charge - just pay shipping. PM me if interested.