INDIAN Motorcycles Sunglasses Driving Glasses IN2010

I have bought 3 pairs of these over the last 5 years. As a product they do the job - reasonable optically, a good "wrap round" design for driving, good glare exclusion and apparently look good, not that I'm al all bothered about that.However, all 3 pairs have broken in almost exactly the same place at the top of the frame near the nosepiece. This can't be coincidence, so there is an inherent design fault in what is otherwise a good value product.I shan't buy again.