Yes, you can exchange it. In this case, we will ask you to confirm your waist size based on the size guide. There will be a fee of 12.50$CAD. The fee represents 50% of the amount we pay to Canada Post for an exchange (return of the wrong item and shipping of a replacement, approximately 2 x $12.50 = $25). The belt must be returned in its original condition, unworn, and unwashed condition without any scuffs, scratches, stains, tears, hair, perfume or other alterations.