Simply fill out the form, print the voucher and take it to your Optometrist & redeem it !
EDIT: It states 5 day free Trial, 5 pair daily wear lenses.
For those special people who get free trials, get your bonus set free, why you may ask ?, bcoz its free and doesn't make any difference if you don't… ;)
I assume that would be 5 pairs of daily wear lenses.