It is a type of combination puzzle, similar to a Rubik's Cube but with a different mechanism and axes of rotation.
Mechanism: Unlike a standard Rubik's Cube where axes pass through the centers of the faces, the Skewb's axes of rotation pass through the corners of the cube.
Design: The cube in the image is a "carbon fiber sticker" version, which means it has stickers with a carbon fiber texture applied to its faces, giving it a distinctive look.
Purpose: Like other magic cubes, it is a puzzle designed to be scrambled and then solved by returning it to its original state, often used for entertainment and to improve cognitive skills.