1. First, you need to find the Tennis Boom coupon code you are interested in on this page and click Get Code on the right side of the title.
2. Next, you'll witness the offer code being showcased and auto-copied to your clipboard.
3. Then go back to the shopping checkout page of tennisboom.com, where you can find the promo code box and paste the code into it.
4. Ultimately, by clicking 'Apply Code', you will be able to see the discount amount on your existing order.