Yes, and most people wear them (included), but they are optional. Shorties are used that are easy to put on, and there are all sizes from extra small child to adults 5XL. More specifically, women sizes go up to 22 (220-230 lbs), after which the men's sizes would work for women. Men's sizes go up to 5XL, which has worked for people over 300 lbs.
Water temperature ranges from 74 degrees (winter) to 81 degrees (summer).