Hi Julia,
Thank you for your feedback and we apologize for any inconvenience that you may have experienced. We understand your frustration with not being able to exchange your Luna Women's Pullover Snowboard Jacket for a different size. We would like to clarify that on our collection page for on-sale items, it is stated that all on-sale items are final sale. Additionally, our return policy page also states that all on-sale items are final sale.
We apologize if this information was not explicitly stated upon your purchase. We always strive to provide clear and transparent information to our customers. We will definitely take your feedback into consideration for future improvements.
Best,
Customer Service Team