Easytwist Kids Turboflex ET 991 Kid's Eyeglass Frames, new with tag as shown. 44-17-120. Frame only, no case or accessories included. EasyTwist Kids makes eyeglasses that are designed to stand up to anything that comes their way, including the twists and tumbles of childhood. EasyTwist Kids eyeglasses are made with a proprietary metal memory called Trilaston. Unlike nickel / titanium alloys that eventually lose their shape, the Trilaston copper / aluminum alloy can retain its shape even after extended wear. EasyTwist Kids frames are also more resistant to shock, corrosion, stress, and even extreme temperature changes. It is important for children's eyeglasses to be able to bounce back from anything, including recess, soccer practice, weekends at the park, and anything an active child can put them through. This is why the stand-out durability and amazing shape retention of EasyTwist Kids is an ideal choice. Easytwist Kids ET 991 - Kids-No clip on Lens is a Full Rim frame for Boys and Girls, which is made of Metal. Most metal frames are made out of Monel. Monel has a copper and nickel base. This metal can be corrosion resistant, strong, and easily adjusted. It retains its stability and shape. This model features a Rectangular shape, with a Single Bridge. This frame features a spring hinge, which keeps its initial balance and adjustment, thereby avoiding the need for subsequent adjustments. These Eyeglasses work well for people whose style is: Classic.