Tired of having to replace kids frames because they break too easily? Designed specifically for tween and teen boys the Z8-Y40 frames are virtually indestructible, providing comfort at school and durability at play for active boys.

RX Prescription available through your Optical Retailer.

The Z8 are designed to be worn by active youth as their daily ophthalmic frame.

Made with Nylo-Flex™ material for the ultimate in flexibility and ruggedness.

ShockBlok™ LV1 Impact Dampening technology absorbs and transfers shock from the lens to the flexible frame.

Comfort Fit Nose Pad is made from anti-slip TPR material is injection bonded for maximum durability.

3D Contour Grip™ allows for custom fit and all day comfort and is hypoallergenic.

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Talk to your eye care professional about lens options.

If your eye care professional uses the Liberty Performance Lab, Liberty recommends: Clear BluBlok™ lenses designed to block harmful HEV Blue Light found in cell phones, tablets and other electronic devices.

The sizing is the official measuring standard for all frames:

  • A = the horizontal measurement of the lens
  • B = the vertical measurement of the lens
  • ED = Effective Diameter defines the minimum diameter lens that will fit a frame when the geometric center of the lens is exactly centered in the frame.
  • DBL = Distance Between Lenses or the bridge size
  • TL = Temple Length
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Although Liberty Sport sports eyewear is designed to offer the best possible protection during certain sporting activities, there is always the possibility that the wearer may sustain an eye, face, or other injury due to impact or because of the nature of the athletic activity. If the frame incurs an severe impact it must be replaced. If the frame is neglected or misused, or is worn improperly, the degree of eye protection provided may be reduced and may result in permanent eye, face, head, or other injuries. Neither the designer, manufacturer, nor Liberty Sport Inc. claims their sports eyewear is unbreakable or eliminates the possibility of injury.