1. Copy the discount code of Aero you want on the page and click to get code.
2. With a single click, the offer code will then be displayed and auto-copied to your clipboard.
3. Following this, you'll be required to go back to the checkout page of aero.com, spot the promotional code box, and input the code you copied earlier.
4. In the end, you have to click 'Apply Code' to determine the discount you've received on your current order.