Frequently Asked Questions
Are the Oakley Chamfer Squared 8143 frames prescription-ready?
What is O-Matter material and why does Oakley use it?
What is TruBridge technology on the Chamfer Squared?
What does Unobtainium mean on Oakley frames?
What face shapes work best with the Chamfer Squared?
How do the adjustable wire-core temples work?
Compare With Similar Frames
How the Oakley Chamfer Squared 8143 Eyeglasses stacks up against the closest alternatives we carry.
- Lower price point ($92–$187 vs $217–$242)
- Iconic retro-inspired design with broader recognition
- Slightly larger lens size (56mm) for bigger faces
- Lower starting price ($95 vs $217)
- Slightly more rectangular shape for variety
- Similar O-Matter construction and durability
- Identical price range—direct value comparison
- Different frame shape for variety (likely rectangular or different proportions)
- Similar build quality and O-Matter construction
Read the full comparison
Oakley Chamfer Squared 8143 vs. Holbrook RX 8156 vs. Plank 2.0 8081
Choosing between Oakley's prescription eyeglass frames often comes down to style preference and fit technology. Here's how the Chamfer Squared 8143 stacks up against two popular alternatives in our collection.
Chamfer Squared 8143: Modern Precision
The Chamfer Squared represents Oakley's most refined approach to everyday optical frames. Its TruBridge technology with four interchangeable nose pads and adjustable wire-core temples deliver a level of fit customization that the other frames can't match. The clean square shape with beveled temple detailing works equally well in professional and casual settings. At $217–$242, you're paying for advanced fit technology and a streamlined modern aesthetic.
Holbrook RX 8156: Retro Icon
The Oakley Holbrook RX 8156 brings the brand's most famous sunglass silhouette to prescription eyewear. Starting at just $92, it's the most affordable option and offers that unmistakable retro-inspired look. However, it lacks the TruBridge nose pad system and adjustable temples, relying instead on a fixed fit. The frame is also noticeably chunkier—great if you want bold style, less ideal if you prefer understated frames for the office.
Plank 2.0 8081: Budget-Friendly Modern
The Oakley Plank 2.0 8081 ($95–$187) splits the difference in price and style. It shares the Chamfer Squared's modern, rectangular aesthetic and O-Matter construction but omits the advanced fit features. If you have a face that fits standard frames well and don't need the micro-adjustability of TruBridge or wire-core temples, the Plank 2.0 delivers solid value.
Our Recommendation
Choose the Chamfer Squared 8143 if you want the most customizable fit, plan to wear your glasses during active pursuits, or simply want Oakley's latest fit technology. Go with the Holbrook RX if you love the retro look and want to save money. Pick the Plank 2.0 if you want a modern frame at a lower price and don't need advanced adjustability. All three are prescription-ready and built with Oakley's durable O-Matter material.
At a Glance
Oakley Holbrook RX 8156 Eyeglasses
Pros:
- Lower price point ($92–$187 vs $217–$242)
- Iconic retro-inspired design with broader recognition
- Slightly larger lens size (56mm) for bigger faces
- Available in more colorways and finishes
Cons:
- No TruBridge interchangeable nose pads for custom fit
- No adjustable wire-core temples
- Thicker, chunkier frame profile may not suit professional settings
- Heavier overall feel compared to Chamfer Squared's streamlined design
Oakley Plank 2.0 8081 Eyeglasses
Pros:
- Lower starting price ($95 vs $217)
- Slightly more rectangular shape for variety
- Similar O-Matter construction and durability
- Good alternative for those wanting a less squared-off look
Cons:
- No TruBridge technology—less customizable fit
- No adjustable wire-core temples
- Less refined beveled detailing on the temples
- May not offer the same level of fit precision for active wear
Oakley Exchange 8055 Eyeglasses
Pros:
- Identical price range—direct value comparison
- Different frame shape for variety (likely rectangular or different proportions)
- Similar build quality and O-Matter construction
- May suit different face shapes or style preferences
Cons:
- Specific feature set depends on model (may lack TruBridge or wire-core temples)
- Less information available about long-term durability and fit
- May not have the same level of adjustability as Chamfer Squared
- Different aesthetic may not suit those specifically seeking square frames



