Coast Optics Echo riding sunglasses pair a Bio-TR90 frame with an interchangeable lens and Ultra-Grip contact points.
| Feature | Specification |
|---|---|
| Frame color | Black |
| Lenses included | Clear |
| Frame | Bio-TR90 |
| Lens | High-definition interchangeable lens; anti-fog and scratch-resistant coatings |
| Retention | Ultra-Grip rubber nose and temple tips |
| UV protection | 100% |
| Fit | Compact fit for smaller heads, women and youth |
| Lens geometry | Cylindrical |
| Clear lens | 85% VLT; category 0 |