Review on Ironman Tenacity Sunglasses: Sleek and Stylish Matte Rubberized Shades for Optimal Performance by Marlo Schlachter

Not sure if these cycling glasses were designed by Fosters or are a copy. Usually within the first 12 months the ends break or the screws fall out. So you have to be very careful with these glasses. I gave these sunglasses a '3' as they are reasonably priced but the design and manufacture causes parts to break without much use - I use them once a week. If you look at the photo, the end breaks off and the screw falls out on at least one side. Note: 7 months later (December 27, 2020) no design changes. The screw falls out for 1 week after 6 months of use.