I'm sorry that because these items are made-to-order, we do not hold stock nor accept returns because of wrong size selection by customers. It is also stated in the refund policy here: https://melaninful.net/pages/refund-policy.
However, don't feel bad. You can still use it as a gift. Your friends and family will sure love it. I know that it would be a bit disappointing. Therefore I want to give you a gift. Use code 10CS at checkout so that you can get 10% off your future orders.
Tashard at Melaninful.