Height adjustable - This allows the user to adjust the walker to the right height and allows different people to use it. Level feet - Ensure that it has level feet. This means all the legs will rest on the ground at the same time on level ground. Lightweight - Since seniors have to pick it up every two steps, it's important it is lightweight (but strong). Easy to fold - Make sure it is be easy to fold - poorly designed models have small hard to push buttons and are stiff to fold. Comfortable handles - Have the senior try different handles as we all have different size hands.