Those are diving glasses. If you are swimming, you don't need to use that. This is a great resistance. If you are a beginner, I suggest buying slightly worse glasses. You can buy whatever you want if you have more money. I think two brands of glasses are the best, one is Yingfa (made in China) and the other is SPEEDO (made abroad). Speedo is usually used in large swimming competitions. Let's talk about the precautions for choosing glasses.

The most important thing about your glasses is that they don't touch water and won't fog. Just look carefully, right? Generally, slightly better glasses don't touch water. For foggy glasses, just wet them before swimming, and then lick the endoscope. The effect is very good. When buying, check whether the rubber on the edge of the glasses is aging or not, pay attention to it, and then take it with you to see if the lenses are flowered. Just buy one around 100. In fact, as long as it is genuine Yingfa and Speedo, the quality will not be too bad.