Suits the following eye shapes:

Round Eyes: Helps to elongate and create an almond-like look. The flare on the outer corner provides a lifted, cat-eye effect.
Almond Eyes: A perfect match that enhances the natural shape without overpowering. The gradual length works well with the natural taper of almond eyes.
Hooded Eyes: The longer outer ends can help "lift" the outer corners. The wispy and spaced-out design prevents heaviness on the lid.
Monolid Eyes: The lash clusters provide definition without hiding the eye, and the flared shape adds dimension and openness.

Not ideal for:

Downturned Eyes: The flare might emphasize the droop, unless paired with a lifted eyeliner.
Very small or deep-set eyes.