Do you know what are the choices of Rollator Walker? What distinguishes each of them?

If you need a rollator, you should be working with a physical therapist to find the best model and fit.

Get a referral from your doctor for PT.

Any assist devices such as walkers, canes etc etc need to be prescribed for the individual after assessment by PCP and / or physical therapy or other medical professional referrals. Trying to " decide" on one without proper professional assessment of needs and direction on devices , can actually make a situation worse or even be dangerous.

I would recommend, too, a Physical Therapist evaluate your friend. Rollators are not for everyone. It tends to get away from some people. If your friend is on Social Security disability, Medicare may cover the cost but they also may only have certain models they will cover. A therapist can tell you what one is best.

I have found that those who use a standard walker are using them wrong. First they are not high enough so they are leaning over them. The are being pushed way ahead. They should only be pushed a few inches and walked into. The use of tennis balls and gliders can be used to maneuver rugs and hard flooring. I think a set of wheels can be put on the back.

If Parkinson's is involved there are special made walkers. Because people with Parkinson's tend to fall backwards, the walker is special weighted to help with not falling backwards.

I have a Drive Rollator (European Style) Iove it because it doesn't look like something medicare gives out. I had a stroke the end of February and I had to learn to walk again. The light walkers scared me because I would fall over backwards, and they were not sturdy enough to keep me from falling. I already had my rollator bcause of back problems, so I had family bring it to rehab. The seat is perfect for carrying things from a dish of food to laundry. When I am out and I get tired, I have a place to sit down. When I first got it, before stroke, small grandchildren loved to be pushed in it. The wheels are larger than walkers and go over cracks in asphalt and concrete much better. They come in pretty colors. I have a red one and I just bought a different brand for my sister-in-law in a beautiful sea foam green.

There are hundreds of them available and no doubt each one has their pros and cons, I suggest you scroll through a few sites with ratings to get an idea of what people are saying and then work with a PT or OT to pick something that fits your needs and budget. Things you might want to consider are
if using it outdoors you will need bigger, sturdy wheels
how easily it folds and how heavy it is if you will need to put it in the car
whether it's designed to be used as a transport chair (most are not and it can be dangerous to do so)
whether you want a seat that is more than a temporary perch

My husband was tall and walked outdoors a lot so we got a European-style rollator that TopsailJanet mentioned. He had Parkinson's so it was important he walk upright as much as possible and have something to help his balance (which was terrible). It was great--had large wheels, a seat, but no under seat storage, and had extra options such as a tray to put on the seat for transporting things (which we bought), a seat back, storage basket, etc. It was light weight enough for me to easily get in the car and it folded very easily. He'd started with the more traditional style of rollator but he couldn't walk as naturally with that as it was too low and wheels didn't work well over uneven surfaces. The brand is Volaris, and it's made in Sweden. It was expensive and we paid out of pocket but it was worth every penny. They have models for kids and shorter people too. https://xlentcare.com/ If cost is no option, I've heard of people having more than one rollator--one for indoors and another more rugged one with bigger wheels if they are gong to be outdoors on irregular surfaces a lot.

smellycat: Ask your friend's physician this question especially since the individual is young at 24 years of age. When I purchased a Rollator for my elderly mother, I made the mistake of not going through her doctor. Ergo, it was not covered by Medicare.

JoAnn makes some good points about walkers vs rollators, we preferred using the two wheel walker at home and saved the rollator for trips where travelling outdoors was unavoidable.

My son bought my mother a Healthsmart Walker Rollator from Amazon and her physical therapist told us it was the “Cadillac” of walkers. Mom loves the purple color and the fact that it rolls so smoothly and is easy for her to handle. I love that it folds up pretty compact, is so much sturdier then others and is rather light to lift in and out of the car. https://www.amazon.com/gp/product/B006W7049M/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I got a Nitro - best one ever! Has a seat pocket and heavy duty. Had a 40% off coupon from CVS so it cost about $120.00 after the coupon. My daddy loved it because it was red. I love it because it heavy duty. My daughter used it and she is 38. Its also adjustable because we are tall 5'10" to 6'1". Hopefully this helps.