Bertoni Sunglasses for Cycling Running Golf Ski-Lens in Shatterproof Nylon by Italy-N30A Frame: Nylon - color : mat black Lens: made in F.R.P. ( flexible and Robust Polymer ), patented italian lens totally flexible and anticrash Nosepad: adjustable Weight: 18 grames Suggested sport: all sports, cycling, golf, running, etc.