For no-fuss, flexible frames, choose the ET 889 from EasyTwist. The slightly rounded rectangular silhouette and slim temples make this an uncomplicated pair of glasses that look good and get the job done. The alternate fit ensures a no-slip grip on a low or wide nose bridge, and won’t leave marks on high cheekbones. And this frame is built to last: Unlike nickel/titanium alloys that eventually lose their shape, EasyTwist’s proprietary copper/aluminum memory metal, Trilaston, retains its shape even after extended wear.