(TrendHunter.com) Jamba wants to help consumers celebrate their “Bestie Summer Ever” by bringing back its Summer Blackberry smoothie and Watermelon Breeze smoothie. This summer, Jamba fans can get their hands on... (TrendHunter.com) Jamba wants to help consumers celebrate their “Bestie Summer Ever” by bringing back its Summer Blackberry smoothie and Watermelon Breeze smoothie. This summer, Jamba fans can get their hands on...