Head over to Jamba Juice this weekend and Buy any size smoothie or juice and receive a small smoothie or 12oz Juice for $1 !!! You can upsize at additional cost too. Just print or show this coupon to the cashier. Offer valid this weekend 5/21/2015 – 5/25/2015 ONLY at participating California, Illinois, New York, New Jersey, Maryland and Washington DC Jamba Juice stores.