Lo Mein noodles are soft, especially when they have been cooked. The noodles that are used in lo mein are egg noodles. The best kind of egg noodles will be found in the fresh section of the grocery store.
You can typically find the egg noodles in the refrigerator section of the grocery store near where the fresh pasta is. In our personal opinion, fresh egg noodles are the best option to use. They are quick and easy to cook, and they taste fresh and soft when cooked. However, the fresh egg noodles are soft when purchased too.
If you want to stock up on noodles, there is the option to purchase dried egg noodles too. While these do not taste as fresh, and will need to be boiled before they are used, they are a useful option too. They will keep far longer in comparison to fresh egg noodles.
Dried egg noodles are hard when they are first purchased, but once they are cooked, they will soften and become soft like the fresh egg noodles too.