The Easytwist Kids ET919 eyeglasses (with no clip-on lens) are a stylish and durable option for the fashion-conscious older child, tween, or teen. These cute frames feature a narrow oval profile perfect for a petite face, and an interesting temple silhouette that adds a dash of appeal. Even the most active kid can wear the ET919 worry-free: Easytwist’s proprietary memory metal, Trilaston, is formulated to retain its original shape even after bending or twisting. Trilaston is the only nickel-free memory metal frame; unlike nickel/titanium alloys that eventually lose their shape, the Trilaston copper/aluminum alloy retains its shape even after extended wear.