Z8-Y80Designed to be Virtually Indestructible, the Z8 Y80 Youth frames uses specially designed for ultimate ruggedness and flexibility. Tough enough to be bent, twisted, stomped and dropped, these frames are made to stand the test of time and kids! Features: V FLEX Infinie Pivot (TM) Hinge provides a patented, flexible and screw less breakaway away pivot hinge giving wider range for adjustments Head hugging temple with wire core and rounded tip safely