I first bought a couple of pairs of these last November - I had a replacement knee joint, and could not wear my jeans due to a certain amount of swelling. It is now the end of February, and although washed and worn nearly every day they are as good as new - no bobbling, loss of colour or going out of shape. I wear them everywhere, from the gym, to shopping or out for a drink - which quite surprises me! My knee still swells slightly if we are on a longish car journey, so these are ideal - no bag or sag at the end of it. I now have 4 pairs, which speaks for itself.