This gadget is good if you have bad knees, that pop out of place. The springs have to be placed just behind the knee joint and it helps to support the knees when walking.
I needed help standing back when working in the garden, this helps, they tend to move while walking.
"Before ordering, I was wondering what size thigh they would go up to, but it seems like the Velcro will attach to the straps, as one is fed through the other. Difficult to say what size then, other than adjustable. I think these might take a little while getting use to but I do like the design"
These knee braces work as advertised. They give support behind the knee and relieve strain. They help you get up when you have to get on your knees. The braces are well made. The hinges don't bother your knee and the straps are easily adjusted and comfortable. Definitely worth the price for a pair of braces.
I am 72 years old. I don't know what I originally thought the power knees would do for me, but they have actually made walking my hilly neighborhood more enjoyable. I walk between 4 and 5 miles a day and prefer to walk with the power knees. I have used them during yard work and do believe they make kneeling for gardening & weeding easier.