How can I tell if goggles will fit without using them in water?
For a good fit, your goggles should sit comfortably on the bridge of your nose and create a seal all the way around your eyes without any gaps.
You could use a mirror to check the seal as it can be difficult to spot when you are wearing them, or ask a friend. Also to check the fit of your goggles before going swimming, lean forward, so your face is facing down towards the floor. Press the eye seals into your eye sockets and let go - they should stay in place if they are a good fit. You can make adjustments to the nosepiece and spread of the eyepiece, but if the goggles don't hold without the strap, at least for a few seconds, they probably will need a very tight strap to keep the water out.
