Started working with speert in 2012 with no problem till November 2017. I always order 2 pairs which I only use for computer work. One pair weakened, widened at joint until arm fell off and then I reordered 2 pairs in march of 2018 and here I am a little over 2 months later and the same thing happened to one pair. I have 2 computers and use a different pair at each. I never take them with me as I have a progressive pair that I wear full-time... which I have been wearing for over 6 years with no issues. I take very good care of everything I have but not much I can do with junk.