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Mineral King

Mineral King

Regular price $139.00
Regular price Sale price $139.00
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Shipping calculated at checkout.


The Mineral Kings are for you if you want a more traditional fit in your performance sunglasses. These are aggressive trail glasses in a casual and stylish package. 

  • Adjustable no-slip-grip temples 
  • No-slip-grip nose piece
  • Premium lightweight recycled
  • Bioptix nylon blend frame
  • Trail vision technology lenses
  • Includes FKT case, pouch, and microfiber cloth


Best For S-M Head/Face Size


Trail Vision Technology provides image enhancing optics, improved depth perception, and heightened color definition. 

  • Shatter-resistant
  • 100% UVA and UVB protection 
  • Blue light filtration 
  • Designed for variable light conditions


We offer free shipping on all product. 

If you are not completely satisfied, you may return your item(s) within 30 days of the purchase date for a full refund at no cost to you. In the event of a refund, credit for the full purchase price will be issued to the chosen payment method, generally within 5-7 business days from receiving your returned product. A refund issued to a credit card will appear on your account based on the bank’s policy.

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Namesake Trail

Mineral King

The Mineral King Loop is 36.3 miles with 12,140 ft of breathtaking (literally and figuratively) vertical gain taking you through subalpine valleys and high granite peaks. A quirky aspect to watch out for with this trail is the marmots known for wreaking havoc on campsites and even cars in the area. Read more about the pesky marmots here

Drew Antonisse currently holds the only known time at the moment at 9h23m5s.

Learn more about the FKT here.


36.3 Miles

Elevation Gain:

12,140 feet


Trail Ready

The adjustable temples allow you to create the perfect fit. Combine the adjustable temples with the no-slip-grip nose piece and you can hit your hardest efforts without worrying about your glasses falling off your face. 


Trail Tough

Lightweight, flexible, and extremely durable. Our premium frames are constructed of a recycled nylon blend that gives you the performance and durability you need at a lower cost to our environment.


Trail Vision

FKT’s shatter-proof polycarbonate lenses aren’t polarized because polarization isn’t what a trail athlete needs. Polarization is wonderful if you’re on the water or snow, but it can cause depth perception issues if you’re running on a trail with variable light conditions. That’s why we opt for our Trail Vision tech which provides 100% UVA/UVB protection. All lenses are treated with hydro-oleophobic, anti-scratch, and anti-reflective coatings to ensure you maintain a consistent field of view through ever-changing conditions.


Trail Goodies

Protect and clean your glasses with environmentally friendly accessories. All FKT sunglasses come accompanied by a protective case, recycled microfiber pouch, and recycled microfiber cleaning cloth. 

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Focused on


From recycled materials to sustainable production practices,
this is how we’re building a more sustainable future.

Customer Reviews

Based on 2 reviews
Best hiking and driving sunglasses

Have had these now about one month.
I have never been able to be very compliant with eye protection in the past because sunglasses squeeze my nose and pinch behind my ears and give me a headache.
These sunglasses fit so well and are the most comfortable I have ever found.
I will wear them hiking and don't realize I am still wearing them and garden and work in my yard all day and never have to take them off due to pain.
After being outside for 8 plus hours my eyes feel rested and comfortable and my ears are pain free.
I bought the peridot color

The best running glasses I've ever owned

Love everything about these. The adjustable sides, the nose piece, the style of them, and the size. These fit with a hat really well and you can wear them for runs or casual.