Compatible with Evenflo narrow-neck bottles, this adapter ensures an effortless transition between the bottle and our Baby's Brew portable bottle warmer. DOES NOT INCLUDE WARMER OR BOTTLE Narrow Neck Adapter Also fits: * Medela * Dr. Browns Narrow Neck * Life Factory * Parents Choice * Nanobebe * & Most Narrow Neck Bottles How To Use Your Evenflo Narrow Neck Adapter - VIDEO COMING SOON