To receive the Oura sizing kit credit on Amazon, buy the sizing kit from Amazon using the same Amazon account you’ll use for the ring purchase, then add an Oura Ring or Oura charger to that same cart. The credit is applied automatically at checkout, and it is non-transferable and only valid on Amazon.

How it works

  • Buy the sizing kit from Amazon. Oura says sizing kits are sold on Amazon for $10/10 €/£10, depending on region.
  • Use the same Amazon account for the follow-up purchase. The ring order must be placed with the same account that bought the kit.
  • Add an Oura Ring or Oura charger to the cart. The credit is automatically applied at checkout when an eligible item is in the cart.
  • Match the kit to the product generation. A Gen3 sizing kit gives credit for Gen3 products, while an Oura Ring 4 sizing kit applies only to Oura Ring 4 products.

Important limits

  • The credit is non-transferable.
  • It can only be used on Amazon.
  • You can apply only one sizing-kit credit to an order.

If it does not appear

If the credit does not show up automatically, the help page says to contact Amazon customer service for questions about the credit.

TL;DR

Buy the sizing kit on Amazon, keep using the same Amazon account, and place your ring order with an eligible Oura item in the cart so the $10/10 €/£10 credit auto-applies at checkout.