The Merry square are magnificent shades whose frame is made from unique and well crafted alloy material. The Italian designed shades have polycarbonate lenses which is a very efficient material for making lenses.The lenses have height of 52mm and width of 58mm.These lenses are one hundred percent UV400 gradient,this means they give you maximum eye protection from extreme dangerous sum rays. The quality of these shades is of by FDA,CE UV400 standard making it a legitimate brand. These are usually worn while travelling ,shopping.