I made the mistake of falling into the trap of buy some Chinese goggles a couple of years ago, and greatly regretted it.  Those goggles were actually sharp on the bottom of the connector piece on the bridge of the nose, and had my son or daughter swatted the goggles, they probably would have cut the skin - they were that sharp.  They also leaked continuously.  I bought them at the time based on their rating, but have since been able to figure out that if you consider buying any Chinese product, you bet read they 1-star ratings first, because all the five-star ratings are written with poor English and are obviously fake.  I'm at a point now where if a product has a Chinese brand name, I'll look somewhere else.  These guys seem to make products that are never "quite right" and usually fail well before they should.