In line with our multi-functional bags, we launched our reader glasses that can transform from spectacles to sunglasses in seconds. These ones are a matt black colour which goes well with any palette and is especially great for any Harry Potter fans.  OTHER INFO POLARISED MAGNETIC LENSES UV400 - 100% protection from the sun’s harmful UVA and UVB ultra violet rays. Tinted lens filter category 3 - Dark tint. Glare reduction for clearer vision Conforms to EN ISO 12312-1: 2013+A1: 2015. WARNINGS: SUN SHADES Not for direct observa Go from optical to sunglasses in the blink of an eye. Our magnetic glasses were born as an elegant solution to the problem of easily switching between optical and sunglasses.  The unique 3 in 1 functionality means that you can have your optical prescription in the base frame layer and then build up from there. Tinted lenses attach via tiny magnets with a satisfying click, turning your opticals into sunglasses without the need for clip-ons or multiple pairs.