Liberty Bottleworks Sport Cap
Why It Gets Our Seal of Approval; Comes with a pack of four 8.5" straws (require trimming for use with Kids bottles); 100% BPA-free, also free of phthalates. The Liberty Bottleworks Sport Cap features one-handed operation and leak-resistant design. Easy-open cap wing depresses to raise the bite valve, flips back to close the cap. Simple ? turn on/off cap means no more turning and turning to get the bottle open and no threads to collect junk. The cap is compatible with all sizes of Liberty Bottles. Please note: While sport cap is spill-resistant, it is not completely leak-proof.