Phyzics sunglasses are unique and patented, and has solved one of the major weakeness of sunglasses design. Most sunglasses use a hinge to connect the temples to the frame front. Over time, hinges can wear out and break. Phyzics Sunglasses created a technology that uses magnets in place of traditional hinges. Magnets never wear out, and they cannot break. When stresses, the magnets simply part, and then you just put them back together. The design eliminates side pressure caused by standard temples. The unique fit combined with a lightweight titanium design results in an amazingly comfortable fit.