A lighter leash is a small accessory designed to keep a lighter attached to a keychain or lanyard for easy access and convenience. It consists of a small plastic or metal case that securely holds a lighter in place, along with a retractable cord or chain that extends the light when in use.

The lighter leash is popular among smokers who want to ensure that they always have a lighter on hand, as it can be easily attached to a keychain, belt loop, or bag strap for easy access. It's also useful for those who lose lighters frequently, as it keeps lighter attached and easily identifiable. Some lighter leashes include additional features, such as a built-in bottle opener or a carabiner clip for attaching to a backpack or other gear. They may also be available in different colors or designs to suit personal style preferences.

Overall, a lighter leash can be a handy and practical accessory for smokers or anyone needing a lighter. However, it's essential to use it safely and keep it away from heat or flame when not used.