It has the comfort of a mask but the portability of goggles. The lens of the goggles is transparent while around the eye you will find silicone for the perfect fit. There is an adjuster on the strap to enlarge or shrink and tie properly to your head without letting water in while also being comfortable without excessive pressure. The back strap is double and connects towards the front, this way you will be able to adjust even the fastening at the back of the head.