What is the best travel card to use overseas?

Hey there, I'm planning a trip overseas and I'm wondering, what's the best travel card to use? I want to make sure I'm getting the best value for my money, with minimal fees and good exchange rates. Are there any specific cards that you would recommend, or should I look into getting a prepaid card? I'm looking for something that's easy to use and convenient, while also saving me some money on my travels. Thanks in advance for your help!