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National Lampoon's Christmas Vacation Fort Knocks
- 54-21-139
- Weight not published
Polarized
Color not published
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Ferrata
The Sunski Ferrata is a pair of 53-21-145, 15 g square plant-based sunglasses with polarized polycarbonate lenses.
- Size
- 53-21-145
- Weight
- 0.0 lb · 15 g
- Polarized
- Yes
- Frame
- Plant-based
Image not availableWhat the data says
- Heavier than most pairs its size: 100% of 4 comparable pairs weigh less.
Computed from the specs below. How we write summaries.
Full specs
Last verified Oct 5, 2026
Unless marked otherwise, specs are from the manufacturer’s product page (sunski.com).
| Lens width | 53 mm |
|---|---|
| Bridge | 21 mm |
| Temple length | 145 mm |
| Fit | Medium |
| Weight (manufacturer) | 0.03 lb (15 g) |
| Shape | Square |
|---|---|
| Frame | Plant-based |
| Lens | Polycarbonate |
| Polarized | Yes |
| UV400 / 100% UV | Yes |
| Mirrored | Yes |
| Prescription available | Yes |
| Colorways | Spruce Silver, Tortoise Bronze, Storm Forest, Olive Citrine Amber |
|---|---|
| Built for | Everyday carry |
| Warranty | Lifetime warranty |
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