These miniature Skull Smash bottles come with a durable silicone holder and carabiner to clip on to anything you’d like to keep it on. These are very small, and can fit just about anywhere…perhaps even as a key chain. There is a small amount of ammonia in these bottles, so while they are small, they are still usable. Due to the size, you will need to get your nose close to the opening to use it, so it is not recommended to share these.