Bath towel for first hot yoga class

LOL. LOL. It’s my first time doing yoga! I was told to bring in a towel. I had no idea there’s a specific “yoga mat towel”. I brought in a bath towel & used it in class. 😂

Now that I am aware of this — could you recommend towels for me then? I find them so expensive.

Also, I brought in my peleton mat. Is that okay?!

Thanks in advance!