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This cap is designed to flawlessly pair with your 1L BKR bottle for easy and versatile sipping with the BKR silicone straws. Made with the same polypropylene as the BKR original cap, this cap also features a clear silicone valve to hold your straw.
BPA and phthalates.
Screw the cap onto the bottle and insert the straw through the clear silicone valve. Dishwasher safe on the top rack and the valve is removable for easy cleaning. For safety reasons, do not use rigid straws with this cap.
I-059283