Assemble Swedish Goggles

This will teach you how to assemble the ever famous 'Swedish goggles'.

Steps

Thread nose string through the first lens. Use the small hole located at the side of the lens.
Slide the blue nose cover over both ends of the nose string.
Thread one end of the nose string through the remaining lens. Tie with a knot. By sliding the string, you should be able to hide the knot inside the blue nose cover.
Push each end of the rubber strap through the opening on the edge of the lens.
Pull equal lengths through the lens hole. Do this so that you can tie the strap in a knot. The rubber strap now acts as a double headband. If you find you need to tighten further, you can untie and shorten up the length. Once you reach a comfortable length you can cut off any extra rubber strap.

Some swimmers use a small section of the rubber strap in place of the nose string and blue nose cover. Using about 1 ½ inches of the rubber strap, thread the ends through the string holes. The rubber strap will stay secure without having to tie a knot.
You can use parts to fix other brands of goggles because these are pretty cheap but last a good time
You can mix colors from different pairs to create creative combinations.
If you tie the nose piece too loose, try twisting the eye-cups to tighten before attaching the headband.
Sometimes the outside edge of the eyepiece is sharp. File it down so they're smooth before assembling the goggles. This prevents the eyepiece from cutting into your skin when you swim and makes it more comfortable.

Never pull eye-cups away from face. Injury to the eyes can occur from the eye-cups accidentally sliding out of the fingers, causing them to snap back into your face.