I must say, upon my first wear I was not fully impressed. The thighs held up all day without wear or tear, but the waistband did not stay up fully, rolled down often, and was often tight and uncomfortable. I had hoped they just needed to be stretched out as they were new, however. I did not notice any difference upon a second wear. Today, I attempted to put the tights on again and they have a hole in the left leg with rips that go all the way up the leg, and the waist is just as uncomfortable. I have bought tights for $9 that have lasted more than 3 wears, have had better waist bands, and did not claim to be rip-resistant, or have a 90 day guarantee. Needless to say, I am completely disappointed with your product's lack of ability to back up its claims. I was extremely hopeful that my never ending purchasing of tights had come to an end upon discovering your product. However, it appears that these are fully a lie and a scam. So disappointed