Locate the band loop on your goggles. Find one of these hard plastic loops on each side of your goggles. This is where the strap feeds.
Lay your goggles face down and place the strap over them. Ensure the strap lies flat and is not twisted.
Push one end of the strap through the band loop, from the back of the goggles.
Pull the strap through a few inches and loop it back through itself. The goggle strap should have a loop on it that secures the loose end of the band.
Repeat this process on the other side. Once the strap is secure, you can adjust your band to a comfortable size and hit the pool.