I purchased this Walk Mate rollator walker for my surgery recovery. It has 4 -10" large non-slip wheels (not air). It has 2 powerful spring suspensions to provide more stability while walking and sitting as it supports your upper body. Works excellent.
The brake cable is ran inside the frame and there is less chance to get the cable hung up on something or tripping you while walking. You can also set the brake so the unit is stationary. Will not move while seated.
It has a thumb push button, you can adjust height to fit you in 6 levels from 34.25" to 40". I'm 6'2" - 320 lbs and it worked perfect for my knee surgeries. Also comes with a cane attachment and a cellphone and water/coffee cup holder. As well as a bag to store other goodies in when you're on the go.
The total weight of the unit is only 21 lbs - and the walker breaks down to fit into a suitcase no problem. I took it to Hawaii and it was a breeze.
It cost me $320.00 new and I only used it prior to my surgeries as the Doctor's encouraged me to use a cane as soon as possible.
Great deal for seniors and someone who needs surgery but need to lose some weight to have the surgery. Hit me up here ...