You would order a new size simply by placing another order on REI.com. Unfortunately, we are unable to refund your money for the first pair until your return is processed (after it is received at our warehouse). Another option would be to wait until your local REI store is open for returns and make the exchange then. We've been opening stores pretty frequently so it may already be open!
As a head's up: we removed your order number to protect your privacy.
Hopefully this helps!
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