Echo
The Coast Optics Echo is a compact sunglass built on a small frame suited to those with smaller heads, sharing the same performance profile as the Nita in a narrower fit. The frame is constructed from Bio-TR90, a biodegradable material that stays lightweight and resistant to impact. Lenses are high-definition cylindrical with anti-fog and anti-scratch coatings, and swap out without tools.
Ultra-Grip rubber nose pads and temple tips keep the frame stable during activity without slipping or requiring readjustment. The Black Sun variant ships with a spare Clear lens for low-light use. The Photochromatic lens transitions between Category 0 and Category 3 based on ambient light, covering the full range from overcast to bright sun without a lens change. All lenses offer 100% UV protection.
Quick Facts
| Feature | Specification |
|---|---|
| Frame Material | Biodegradable Bio-TR90 |
| Frame Dimensions | 134mm wide × 62mm tall, 120mm arm length |
| Lens Filter — Black Sun | Cat 3, VLT 17% (+ Clear Cat 0 / VLT 85% included) |
| Lens Filter — Photochromatic | Cat 0–3, VLT 83%–15% |
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