Using these goggles is easy. Just put them on your toddler's eyes and adjust the straps for a comfortable fit. Before using, rinse them with clean water to remove any possible debris. When using in the pool, make sure the goggles are well - sealed to prevent water from getting in. After use, rinse the goggles again with fresh water and dry them gently with a soft cloth. Store them in the protective hard case to keep them safe from scratches. Don't use harsh chemicals to clean the goggles as it may damage the anti - fog coating. Also, check the straps regularly for any signs of wear and tear.