what to bring to child birthing class?

Mo • Married 9/24/16. Mommy 7/22/17 ❤️
Hubby and I are starting our super intense child birthing class tomorrow and we are so excited! 
The class is at a birthing center and is 2.5 hours long every Saturday for the next 8 weeks!! 
But now laying in bed the night before I realize my sandwich brain (that's what I call my pregnancy brain) forgot to ask the class instructor what I should bring!!! 
I checked their website and it doesn't say anything. 
What did you guys bring to your child birthing classes?