Currents may also be generated by density differences in water masses caused by temperature and salinity variations. These currents move water masses through the deep oceanâtaking nutrients, oxygen, and heat with them. Occasional events also trigger serious currents. Huge storms move water masses.
Ray-ban and most other manufacturers frames are made from Plastic compounds. Ray-ban used to make all its glasses out of 'glass'. Now it makes its sunglass products out of scratch resistent plastics. Often they will 'feel' like glass but are in fact most usually plastic production.
Above: The Ray Ban Wayfarer 2140 901 Sunglasses. Below: The Ray Ban New Wayfarer 2132 901. The classic wayfarer is a more fashion-led shape, whereas the new wayfarer could even be argued to be slightly 'sporty' in comparison. Both are very popular. While the classic wayfarer is unquestionably unisex, I think it's shape suits a more feminine face more than the new wayfarer does.