This sit to stand device is sturdily made. It handles well as far as navigation.
However the knee pads were so low that they hit my shins, not my knees. This was very uncomfortable. I am not a tall person (am 5'5"). Also the bar you use to pull yourself up with your arms was too low for me to get good leverage.
I have used two other models of sit to stand and did not have these problems. Their knees pads hit at my knees. Their arm bars were at the right height for lifting you up.
Customer service was excellent at letting me return my purchase. They were most professional in handling the situation.
If you are a very short person, this ProHeal device might work well for you.