Gator swimming goggle lens

The goggles are good quality and the prescription lens seems to be optically very good. A minor complaint is that the adjustable nosed bridge slips occasionally when the goggles are off (it stays in place when the goggles are on and the headband/eyepieces are taut). So sometimes I put the goggles on without checking the bridge position and start to swim and the eyepiece leak. I have to stop & reposition the nose bridge. When they are positioned to fit me correctly there is no leak for the duration of my swim. In general, worth the money £33 including standard delivery at the time of purchase.