wholesale Cartier Sunglasses or sun glasses are a visual aid, variously termed spectacles or wholesale Cartier glasses, which feature lenses that are coloured or darkened to prevent strong light from reaching the eyes. In the early Twentieth century they were also known as sun cheaters (or simply cheaters).

Some sports-oriented wholesale Cartier sunglasses have interchangeable lens options. Lenses can be easily removed and swapped with a different lens, usually a different coloured lens. The purpose of this is to allow the wearer to easily change lenses when light conditions or activities change. The reason for this is because the cost of a set of lenses is less than the cost of a separate pair of glasses and carrying extra lenses is less bulky than carrying multiple pairs of wholesale Cartier glasses. It also allows easy replacement of a set of lenses if they are damaged. The most common type of wholesale Cartier sunglasses with interchangeable lenses have a single lens or shield that covers both eyes. Styles that use two lenses also exist, but are less common.