All gift vouchers issued as a part of refer-a-friend program, can be redeemed only against purchase of Sunday accessories: Sunday Delight Pillow, Sunday Mattress Protector, Sunday Mattress Topper. 

To get more details of the referral program, please go through all the articles in this refer-a-friend section here.     

Please note that Sunday may discontinue or make changes to the referral program at its discretion and at any time.