At participating Jamba Juice locations, buy one Jamba Juice Smoothie or Juice and get a second smoothie or juice of equal or lesser value for free via this printable coupon. That's the best buy one, get one offer we've seen from Jamba Juice this year. (We saw buy one and get a second for $1 in in May.) Coupon expiration date: September 7, 2015

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