Use ear drops after swimming. It clears out the water so you can hear and prevents ear infections. You can also use isopropyl a alcohol and eyedropper. You will want to look at the ceiling so you do not get any in your eyes.
North Lake's pool is kept cool (84F) for lap swimming. If you or your child is sensitive to the cold, you may want to consider a lightweight 3mm wetsuit such as the following which we use for staff and private lesson clients.
While you can use any city-approved swimsuit, it is easier to swim in form-fitting swimsuits that have less drag.
For modesty, you may wear a shirt to cover your swimsuit if you wish. Short sleeve, tight-fitting shirts are easier to swim in than loose long sleeve shirts. Any shirt should be a synthetic material NOT cotton which gets very heavy in the water.
No swim gear will be allowed that can cover the mouth or nose, or is excessively loose, or heavy that may not allow for air.
Please refer to this link for what the city of Irving allows for swimwear and what they do NOT allow (i.e. athletic gear, leotards, gym shorts).