Portable bottle warmer by Baby's Brew. Sleek white design with blue accents. Ideal for on-the-go feeding. Compatible with Dr. Brown's narrow or wide-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 Life Factory Parents Choice Nanobebe & Most Narrow Neck Bottles