Most codes are automatically added on checkout and you'll see the discount reflected in your cart, and throughout the checkout process.
For codes requiring manual entry, check out the steps below:
Discount codes for eligible items can be entered at checkout, before confirming your purchase. All items eligible for discount codes will have a notice about the code above the "Add to Cart" button for the item, as you can see below:
Once in your cart, click "Proceed to Checkout" and add the coupon code on the following page, under the "Have a Coupon Code" section. Then click Apply:
You can view all of the current sales on Reverb here. Please note that discount codes cannot be applied to negotiated offers or 0% Financing through Affirm.