There is some good advice here, especially from the PT who commented. I’ll add that many concerns will point more towards these types of containment walkers, rather than push walkers. Many kids are placed in containment walkers well before they would be upright in that position, leading to atypical motor development, and the ability to reach dangerous things they otherwise couldn’t. Push walkers are supported by some due to the fact that a baby will already be mobile at that point. The push walkers wouldn’t be much different than pushing a box or laundry basket across a room, safety wise.