Ensuring the adjustability of a shower chair aligns with your needs requires a few considerations.  Measure your shower or tub dimensions to check if the chair is adjustable to fit comfortably. Consider the chair's height adjustments to match your requirements, especially if you have specific mobility issues. Check if the chair offers tilt adjustments or seat angle variations for better comfort and positioning. Remember to evaluate if the backrest and armrests are adjustable, as these can significantly impact comfort during showers.