MAC Malt is a very warm-toned, very light mauve with a matte finish. It is a permanent eyeshadow that retails for $17.00 and contains 0.05 oz.
Malt is described as a "soft pinkish beige." It's a softened, medium brown with warm undertones and a matte finish, but it doesn't look anything like the permanent version, which has a pinky tone to it overall. Since it's pretty different, I don't want to muck-up the official list of dupes for the permanent version, but here's a link that'll show you similar shades to the one in this palette. The texture was firmer and harder to blend out, and it lasted for seven hours on me.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.
M·A·C Eyeshadow is a highly pigmented powder formula that applies evenly and blends well. Suitable for use either wet or dry, it's available in a wide variety of textures and finishes.