Convert a Wide-Neck ''Options'' bottle to an ''Options+'' bottle. New Wide-Neck nipple teat not included. Compatible to Dr Brown's Wide Neck Bottles & Dr Brown's Wide Neck Options+ Nipple Teat ONLY. Each Options+ Conversion Kit is individually bagged and includes: 1x Options+ Wide-Neck Collar 1x Options+ Wide-Neck Cap 1x Options+ Wide-Neck Insert, Green 1x Options+ Wide-Neck Reservoir (Vent), Green 1x Options+ Wide-Neck Travel Disk 19-language Bottle Instructions