From the recommendations of Audenticity

Free of BPA, phthalates, nitrosamines, lead, PVC, PET, and biologically harmful chemicals.
No-spill nipple which features our cross-cut design. The design mimics natural breastfeeding as it requires your little one to nurse to receive fluid.
Anti-colic nipple helps reduce the incidence of gas and spit up. Unique one-piece design eliminates cleaning headaches and tricky assembly. No extra parts to lose.
Extra soft, medical-grade silicone spout-- provides an easier transition from breastfeeding to bottle feeding.
Features side measurement markings.
Lightweight (nearly identical to our regular Thinkbaby bottle)
Comes with Stage A nipple (for 0-6 months). Also available: Stage B nipple (for 6+ months)
The transformational line: The Thinkbaby system allows parents to transform baby bottles into our award-winning Sippy Cup through the purchase of the Conversion Kit. The system saves parents money and the environment from discarding baby bottles when it's time for the next stage of feeding.
Comes with a Travel Top, which reduces the chance of spillage during travel and protects the nipple from coming into contact with foreign substances.
Does not leach chemicals to adversely affect the environment.
No animal testing (Leaping Bunny member).

Brand: Thinkbaby

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