Instructions:From the Muji Email: "Create your Christmas the MUJI way. It's simple, stress-free and will save you 20%. Print out your voucher and bring it to Muji between Fri 16th and Sun 25th November to receive 20% off purchases including furniture. You can start giving early this year"
Some terms and conditions included on voucher - i.e. doesn't apply to electronics, full price items only etc.