@southwest
One suggestion based on a bad experience. Don't ever allow someone to sit on the rollator seat and then push them in it like a mini-wheelchair. I did this with my Mother and when we hit a small bump in the path the rollator flipped over in the middle of a street crossing. She was on her back and I was suspended over her still holding onto the handlebars. Quite a sight to see. Thankfully only minor scrapes and bruises and a gentleman stopped his truck to help us both get up. Lesson learned!!