This item has already been assembled, but only used for ~5 minutes indoors. I purchased it for my mother, but she ended up choosing a different style of walker so I'm now selling this one. It is a very high quality build while still being relatively lightweight and portable (collapses to be flat)
I ordered it from Amazon for $179 new: https://www.amazon.com/dp/B07G8JRDW5
It has been rated as one of the top rollators from various health sites (such as https://www.verywellhealth.com/best-walkers-for-seniors-5083029)
Here are some details:
1. Features an easy and foldable design, large 8 inch wheels, and an extra-wide memory foam seat that swings up out of the way to give you more space to walk
2. Walker also includes a thicker cushioned reversible backrest, cup holder, removable under seat storage bag, easy-to-use locking brakes, tray organizer, and brightly marked adjustment points
3. Rolling walker adjusts easily for users from 4'11" to 6'4 tall | 17.5” width between handles
4. Supports up to 300 lbs. | Walker with seat weighs just 17 lbs.