Cressi Big Eyes Evo / Quantum Mask Negative Optical Lens - Left Men's Undersuits The backplate comes with harness

The backplate comes with harness in either Standard or Deluxe style

Once you’ve properly prepped your mask

Built with an over-balanced diaphragm design

Outer Layer

Fluorine coating repels water

Cressi Big Eyes Evo / Quantum Mask Negative Optical Lens - Left Men's Undersuits The backplate comes with harnessThese are negative corrective lenses to fit the Cressi Quantum Mask or Cressi Big Eyes Evolution Mask. We assemble these masks free of charge. And please make sure the lenses you purchase are correct as the lenses are non refundable. If you need help with buying your prescription mask and lenses please visit our How to Buy a Prescription Mask page for help and advice including how to find your lens correction. The images shown are for illustrative