Yes, but only for the same item in a different size or colour, not a completely different item. You have 28 days from the date of receipt to return an item to us for an exchange.
Exchanges can be done in standalone Reiss stores (excluding those in department stores, airports and franchise stores) or via our online returns process; see the 'How do I Return my Order?' article relevant to your country.
Items must be returned in their original condition with all tags attached.