Cressi Big Eyes Evo / Quantum Mask Negative Optical Lens - Left Men's Undersuits Built with an over-balanced diaphragm

Built with an over-balanced diaphragm design

Rinse your hood after each dive with freshwater

Once you’ve properly prepped your mask

the angle tightens to approximately 33% less

Colour Rendering Index: 90

Cressi Big Eyes Evo / Quantum Mask Negative Optical Lens - Left Men's Undersuits Built with an over-balanced diaphragmThese 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