Grateful Dead Dancing Bears Fort Knocks Rx

Even if you’re not a die hard Dead Head, you’ve almost certainly seen this friendly fivesome before....
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Even if you’re not a die hard Dead Head, you’ve almost certainly seen this friendly fivesome before. First appearing on the back cover of the 1973 album History of the Grateful Dead, Volume One (Bear's Choice), the Dancing Bears* have stuck around as a staple of music iconography for 50 years. And just like the music of the Dead will never stop, we’re pretty sure the Dancing Bears aren’t going anywhere anytime soon.

Built to last on the fan-favorite Fort Knocks, this prescription pair lets you bring some tie-dye Dancing Bears cheer along no matter where you’re headed!

*If you talk to a purist, they’ll tell you the bears are marching, not dancing. But like thousands of other Deads Heads already have, we’re happy to encourage alternative interpretations.

  • Clear base with an explosion of tie-dye coloring across the entire frame
  • Tie-dye arms decorated with iconic dancing bears on exterior (well, marching bears if you ask Owsley)
  • Single vision or progressive
  • Interior of left arm features the Grateful Dead logo
  • Silver hardware
  • Lenses available in a variety of colors
  • All sunglasses lenses are polarized
  • Digital lens technology offers sharper image quality and enhanced contrast
  • Correction available in -6 to +3*
  • Astigmatism correction available to -4.00
  • Pupillary distance available in 57-80mm**
  • Scratch resistant coating
  • Anti-reflective coating
  • FDA compliant impact-resistant polycarbonate lenses UV400 protection
  • Lightweight
  • Unisex
  • Hard shell case and dancing Bears tie-dye microfiber pouch included
  • Commemorative Grateful Dead packaging
  • Prescription eyewear is available for U.S. customers only


*Correction available may vary per prescription and frame style selection. Our technicians will verify your eligibility before your order goes to production and will contact you with any issues.
**Some PD restrictions may apply on specific frames. A large disparity between customer PD and frame PD will increase thickness of final product.

Grateful Dead Dancing Bears Fort Knocks Rx

Grateful Dead Dancing Bears Fort Knocks Rx

$200.00 $60.00

Grateful Dead Dancing Bears Fort Knocks Rx

$200.00 $60.00
Size chart
Men's Sunglasses
Frame Size Lens Width (mm) Bridge Width (mm) Temple Length (mm)
Small 51‑53 18‑19 135‑140
Medium 54‑57 19‑21 140‑145
Large 58‑61 21‑23 145‑150
X‑Large 62‑64 23‑25 150‑155
Women's Sunglasses
Frame Size Lens Width (mm) Bridge Width (mm) Temple Length (mm)
X‑Small 48‑50 16‑17 130‑135
Small 51‑53 17‑18 135‑140
Medium 54‑56 18‑20 140‑143
Large 57‑59 20‑22 143‑148
Kids Sunglasses
Age Range Lens Width (mm) Bridge Width (mm) Temple Length (mm)
3‑6 Years 40‑43 14‑15 110‑115
7‑10 Years 44‑47 15‑16 118‑125
11‑14 Years 48‑51 16‑17 125‑132

* All measurements are in millimeters (mm). Lens‑Bridge‑Temple dimensions are printed on most sunglass frames.
* Frame fit varies by face shape, frame style and nose bridge profile.
* Sizes are for reference only; actual wearing experience may differ slightly.

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