When you receive a Discount Coupon by email it will include the Redemption Code. If you want to use the coupon later, keep the code in a safe place.
During the checkout process, in the 'Payment Choice' page, where you select a payment method, a field is provided to enter the Redemption Code. Enter the code here, and click the 'Redeem' button.
The code will be validated immediately and the link 'Discount Coupon: Info' will appear in the Shopping Cart box to provide all the information about it. Now you can use the Discount Coupon to buy any Koolto® item unless special restrictions apply.