The fonds sport style sunglasses from sinner are designed with a focus on functionality and protection for your eyes. The sintec polarised category 3 oil lenses provide 100% uv protection, which is important for protecting your eyes from the harmful effects of the sun's uv rays.the rubber nose pads and temple tips help ensure a comfortable and secure fit on your face, which can be especially important if you're wearing the sunglasses while engaging in sports or other physical activities. And the fact that the stainless steel hinges are integrated into the frame and are nickel free is a nice touch, as it means that the sunglasses are less likely to cause any allergic reactions or skin irritation.sinner sunglasses sintec polarisedsintec polarised lenses reduce glare and increase contrast100% uv protectionanti slip rubber temple tipswidth glass 62 mmheight 39 mmlength temple 119 mmlens category cat. 3lens technics polarised sintec lensnose bridge 20 mm