The Chrome Vest Extenders by Harley Davidson are designed for unisex adults and made of leather and metal materials. With a chain length of 4 inches, these extenders are a stylish and durable accessory for motorcycle riders looking to add a touch of authenticity to their gear. Perfect for adding extra flair to a biker's vest or jacket, Chrome Vest Extenders are a must-have for motorcycle enthusiasts looking to make a statement on the road.