CLUBMASTER CLASSIC Sunglasses in Black and G-15 Green 。The description \"RB 3016 Clubmaster 901/M 52 18 140\" - \"RB\" stands for Ray-Ban, the brand name. - \"3016\" is the model number, which identifies the specific style of sunglasses. In this case, it\'s the Clubmaster model. - \"Clubmaster\" is the name of the style, which is a classic Ray-Ban design. - Model 3016, Clubmaster style - Frame color and material: 901/M (metal and acetate) - Lens width: 52mm - Bridge width: 18mm - Temple length: 140mm I hope this helps you understand the description on your sunglasses!