What Features Does a Great Push Walker Have?

There are many push walkers on the market. Here are some features you should consider:

Stability – The design and width of the push toy.
Weight - The heavier it is, the safer it is as it won't tip over easily. (But if you plan on moving it around the house a lot, it'll also be more annoying to carry around).
Wheel resistance is available for different types of flooring you may have in your home, including hardwood or carpet.
Materials - Your child is most likely teething at the same time. Is it safe for your child to chew and push a walker?
Versatility – Can a walking toy double as a toy? Can it play music? Could it encourage other types of skills?
Entertainment value – Is this toy interesting enough that your child will want to use or play with it in addition to learning to walk with it?