The 3 Musketeers is a chocolate bar made by Mars, Inc., featuring a light, fluffy, whipped chocolate nougat center covered in milk chocolate. Originally launched in 1932 with three flavors (chocolate, vanilla, and strawberry), it now comes in a single chocolate flavor and is known for its airy texture, similar to a Milky Way bar without caramel. It's available in various sizes, including single, share, fun size, and minis, and is a popular treat for snacking, parties, and desserts.