Key Features of the Prada SPR 14O Folding Sunglasses. Prada with original white hard case. The left arm is usually marked with "SPR 14O" (or 14OS), followed by color codes, and "140". Design: These are "folding" sunglasses, designed with hinges on the nose bridge and in the middle of the arms (temples), allowing them to fold into a very compact size.
