Square and rectangle sunglasses are characterised by their sharp or rounded edges. Square sunglasses are ideal for those with longer faces, while rectangular ones are great for those with oval or round faces. The main difference is the width of rectangular shaped sunglasses which is longer than the height. Rectangular frame sunglasses appeal to guys because they bring out their cool or edgier side no matter what they wear. Check out our square and rectangular frame sunglasses from the top brands we carry namely Carve, Electric, Nectar and Von Zipper.