Fetters, shackles or leg irons are a kind of physical restraint used on the feet or ankles. The term "fetter" shares a root with the word "foot".

In humans, typically only prisoners or bondage fetishists will wear shackles. A shackled animal is typically either a dangerous animal or one prone to escape.

Metaphorically, a fetter may be anything that restricts or restrains in any way.

See also

• BDSM
• Bondage cuffs
• Handcuffs
• Thumbcuffs