Start out by creating a blank document. Select the [ Rounded Rectangle Tool (U) ]
Draw a rounded rectangle like what is shown in the image.

Right Click on its layer and click on [ Resterize Layer ].

Select the [ Rectangular marquee tool(M) ] and make a selection as shown blow.

Right click on selection area and click on [ Layer via cut ] to cut new layer.

Now we do not need first layer, then Right click on its layer and click [ Delete Layer ].

The Result:

A. Select [ Move Tool (V) ]
B. Hold down Alt+Shift and duplicate layer.
C. Go to Edit>Transform>Flip Vertical
D. Press “Enter”
E.Merge two layers using Ctrl+E

The Result:

Style Settings
Double click on the layer or go to Layers->Layer Styles->Blending options.
Apply settings shown.

Final Result.

Via:Easy Simple Web Button