Hey! So, the First Years Gentle Warmth Digital Baby Bottle Warmer seems to be a solid choice for warming breast milk.
Based on what we've found, it uses a gentle warm water bath that heats milk evenly, which is important for keeping all those essential nutrients intact.
As for its portability, the manufacturer does say it's compact and lightweight, making it reasonably easy to take along on trips. However, just a heads-up, it's not battery-powered, so you'll still need an outlet to use it wherever you are.
Many folks have found it pretty effective and easy to use. It has a digital touchscreen for simple settings and even features an auto shut-off, so you don't have to worry about overheating the milk.
If you're mostly in places where you can plug it in, it seems like a reliable option. But if you're after something more portable that works without needing an outlet, you might want to look at other options.
Hope that helps!