Unity resizes images to a mulitple of four

Hey everyone,

So the issue is, whenever I bring an image into unity, it resizes the length and width to a multiple of four. I tested this with a few squares and rectangles. 130 x 130 converts to 132 x 132; 118 x 116 converts to 120 x 116; 124 x 126 converts to 124 x 128 and so on. Does anyone know why this is happening and if there is any way to stop it from happening. Secondly, if there isn't, would it be best to tack on a couple pixels of alpha to accomodate for the change or to resize in Unity.

Thank you.