Turn your Dr. Brown’s wide-neck options+ bottle into a sippy bottle for easy bottle-to-cup transitions! Take the bottle baby is familiar with and turn it into a sippy cup, with the Dr. Brown’s options+ bottle sippy spout. Just remove the Dr. Brown’s options+ Vent and replace the current bottle nipple with the bottle sippy spout for gradual learning. The simple-to-sip spout is 100% silicone and assembles in seconds. Easy clean, dishwasher (top rack) and sterilizer safe. Fits wide-neck 5oz/150ml & 9oz/270ml Dr. Brown’s options+ bottles. Bpa free. 6m+.