I am an amputee and have been having issues with my socket so bought the iwalk for use around the house. I am a 25 y/o woman, 5ft 2" and around 50kg. Comfort level is ok, I have been finding it hurts my back and hip after prolonged use (I can only use it for 30mins- 1hr at a time). I have quite a short residual limb but haven't had any issues with security of iwalk due to sliding straps. It has been helpful and given me another option other than hopping/ using crutches for which I am extremely grateful! Feels stable to 'walk' on although I find I have to go quite slowly as to not trip/ stumble. The bit at the top to hold onto while walking is also great for extra stability. Hugely grateful to Peglegs for speedy and efficient delivery!