ISR Aqua KidsOwner, Drowning Prevention Specialist & Certified ISR Instructor Middleton, WII am the owner of ISR Aqua Kids, LLC and a certified Infant Swimming Resource Instructor (ISR). I teach infants and young children, 6 months to 6 years old to become aquatic problem solvers and effective swimmers and/or floaters using the ISR Aquatic Self-Resuce method.