Abstract: In example implementations, an apparatus is provided. The apparatus includes an eye mount, an adjustable layer, and a foam layer. A first side of the eye mount is to be coupled to a display portion of a head mounted display. The adjustable layer is coupled to an outer perimeter of a second side of the eye mount. The foam layer is coupled to the adjustable layer.

Abstract: A portable electronic device including a first body, a second body, and an assembling structure is provided. The assembling structure includes a first assembling unit and a second assembling unit. The first assembling unit is adapted to hidden in one of the first and the second bodies, and the second assembling unit is disposed and hidden in another one of the first and the second bodies. When the first body is close to the second body, the first assembling unit is protruded out of the first body or the second body, and assembled to the second assembling unit, such that the first and the second bodies are fixed to each other.