NWSC provides kick boards and pull buoys for all team members. All that is needed is your swimsuit, swim cap, googles, and a water bottle.
At swim meets swimmers are required to wear the Northwest Tigersharks swim cap. You wouldn't wear anothers team hat or helmet if you played another sport, so wearing the team swim cap is just as important. It is highly recommended that you wear the team suit as well.
This blog on summer league swim gear can be a handy reference for the brand new swim parent.