I have only used this in the swimming pool. They have worked fine. I give it 4 stars as they fog up a lot when I first started using them.
Excellent mask, proved comfortable from the very first use. L'ho purchased as a secondary mask but I think I will promote to primary. Wide visibility and adaptability to the face. I have not tried the strap with Velcro is optional but included in the price ....
Very good product at a super price
I already own an identical mask, and I wanted to buy another (I have always with me redundancy in diving). I took advantage of the excellent price offered. Remarkably, the mask comes complete both the classic strap that of the one in "neoprene" I prefer. I think it is an excellent form of those "frame less" with a very wide viewing angle, and has nothing to envy to much more expensive masks and super hyped as "unique" super ... Highly recommended to all even those as me they have to apply to the optician the bottom (lens) to the instrument reading (I have a +2 degrees)
Best divers narvalo frameless
Buy them without knowing too much product, and certainly the explanation Tradeinn was accurate. The product is great as long as I bought here.