Easy peasy, lemon squeezy! All you have to do is log in to your account — either before or during the checkout process. Your 20% off discount will automatically be applied to any individual sock purchase (AKA, anything that’s not a subscription). But please note: in order to receive your 20% off discount, you cannot have a subscription in your cart at the same time. And free shipping will automatically be applied, too, as long as your order total is more than $10.