Men’s | All-Purpose | Full-Length

K1 Flux

1st Generation

$348.00 $348.00 $478.00 Black Friday Sale Sale
Black
Black
Black
Black
Black
Black

Men’s | All-Purpose | Full-Length

K1 Flux

1st Generation

$348.00 $348.00 $478.00 Black Friday Sale Sale
Low Inventory

, ships within 1-2 days, FREE shipping

  • Medical-Grade Knee Support
  • Adjustable Support Dials
  • Cooling Ventilated Fabric
  • Targeted Compression
  • Full-Length

The only base layer with adjustable medical-grade knee support that's designed to help you overcome injuriesminimize pain, and get back to activity. Engineered with 90 feet of high-strength cables, adjustment dials and targeted compression, the K1 Flux reinforces the knees, hips, and lower back to keep you active for as long as possible. 

Trusted by 40,000+ customers, the K1 Flux is best for all-purpose use, with knit ventilation to keep you cool in any environment. It's lightweight, machine washable and easily wearable for any activity. 

All-Purpose Use

  • Everyday Activity
  • Court & Field
  • Golf

Intended Use:

  • The Supportive Tight is intended for stabilization, support, and protection of the knee. 

Indications for Use:

  • Knee pain due to instability
  • Knee instability 
  • Knee ligament instabilities (mild to moderate ACL, MCL, and LCL) 
  • Knee strains and sprains
  • Knee osteoarthritis (OA) 
  • Patellofemoral pain syndrome (PFPS) 

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$348.00 $348.00 $478.00 Black Friday Sale Sale
Color Black
Size S

The only base layer with adjustable medical-grade knee support that's designed to help you overcome injuriesminimize pain, and get back to activity. Engineered with 90 feet of high-strength cables, adjustment dials and targeted compression, the K1 Flux reinforces the knees, hips, and lower back to keep you active for as long as possible. 

Trusted by 30,000+ customers, the K1 Flux is best for all-purpose use, with knit ventilation to keep you cool in any environment. It's lightweight, machine washable and easily wearable for any activity. 

  • Medical-Grade Knee Support
  • Ventilated Fabric & Fly
  • Full Length

Supportive Apparel sizing is determined by height and weight which helps us predict both the fit of the garment and the cable support system. By using height and weight, we can accurately determine the length and position of the cable support system which is not possible with traditional athletic apparel sizing. 

Find your size with our size picker or by looking at our size chart. You can find the size picker above where it says "Find Your Size" next to the size selections. If you find yourself on the border of sizes, we recommend sizing up. 

Learn more about what to expect during your first wear and consult the frequently asked questions on our sizing, fit and first wear page.

Material Contents

  • 79% Nylon
  • 21% Lycra

Support System Contents

  • Dyneema®: UHMWPE
  • Nylon
  • Polycarbonate
  • Polyoxymethylene
  • Polyurethane

Product Care

  • Wash in Provided Wash Bag
  • Wash on Gentle Below 40°C
  • Hang to Dry

The K1 Flux is designed to help you overcome injuries, minimize pain and regain the confidence to move. Intended for multi-activity use, the K1 Flux is ultra-versatile and is great for court sports, golfing, strength training, fitness classes, walking or everyday use.

The integrated Stoko Support System reinforces the hips and lower back as well as provide medical-grade support for both knees.

It’s adjustable, lightweight, machine washable and provides less bulk than traditional knee braces at a fraction of the cost. Trusted by Olympians, professionals and weekend warriors, Outside Magazine praised the tight by saying it provides “Life-changing support to get people back to activity".

Free Shipping

1-Year Warranty

Support Cables

90 feet of flexible, high-strength cables hidden in the fabric support and stabilize your knee.

Adjustment Dials

Two dials hidden in the waistband allow you to adjust the support for any instability or activity.

Targeted Compression

Increased compression targeting the knee, improves blood flow, stability, and exercise recovery.

Adjustable Medical-Grade Bracing

The K1 Flux packs a lot of hidden technology and is so much more than a compression tight.

Flexible Support Cables

90ft of high-strength cables offer medical-grade bracing.

Adjustment Dials

Adjust the support in each leg for any level of instability or activity.

Flexible Support Cables

90ft of high-strength cables offer medical-grade bracing.

Adjustment Dials

Adjust the support in each leg for any level of instability or activity.

Targeted Compression

Higher compression at the knee supports faster exercise recovery.

Men's Fly

You asked for it, so we gave you easy bathroom access.

TRUSTED BY 40,000+ CUSTOMERS

Stoko's Supportive Apparel is worn by all types of active people including world-class athletes, professionals and weekend warriors looking to overcome injuries, minimize pain and move with confidence.

"Life-changing support to get people back to activity."

Outside Magazine

Confidence-Inspiring Support

Get active & stay active with support that helps you overcome injuries, minimize pain, and gives you the confidence to keep going.
Read the findings from our customer survey here.

99%

Reported
More Knee Support

89%

Reported
Less Knee Pain

80%

Reported
Hip & Back Support

MORE ACTIVITY. LESS PAIN.

“Once I tried them, I wasn’t sending them back EVER! It manages my pain so I can get back to tennis.”

- Mark, 61 Year Old, Avid Tennis Player

Bracing Without the Bulk

Supportive Apparel redefines traditional knee bracing, offering support and stabilization but with added benefits to keep you moving longer.

  • Packable
  • Comfortable
  • Machine Washable

Customer Reviews

Based on 246 reviews
83%
(205)
12%
(29)
2%
(6)
2%
(4)
1%
(2)
F
Farhan R.
Fantastic support

I’ve been fighting with my knee issues since I tore my MCL, and hadn’t found proper quality braces till I used Stoko. It feels strong but light, and it doesn’t move around while you’re moving, so the compression stays. Overall, it’s been great so far.

C
Customer

Si far so good ! I did some exercices this week-end and seems the product will give me great support. I will tell more When I will try it for skiing !
Great service great product so far !

Thank you Stoko

R
Robert I.
Good but,,,

The support down and around the legs is good. However the tights wont stay up around my waist, they continually want to walk down onto my hips, making them sagging off the butt and crotch.

Thanks for sharing your feedback! This can sometimes happen you are wearing the product to low on your ankle. The Supportive Tight is meant to fit at a 7/8 length. Be sure to do the fit check from the cuff, to the knee, to the waist! We have some great resources on our 'First Wear' page of our website!

C
Customer

It seems that will give me great support without pain, madr a few exercices with it but, I will tell you more after my first day of skiing

So far so good !

Thank you Stoko !

C
Customer
Not for me

Although the purchase experience and the support (tutorials etc) was wonderful, the product just doesn't seem to work for me. It didn't seem to provide support in the areas I needed it to and as I tightened the wires I found that it added strain to other areas.
I love the concept and was hoping it would bridge the gap to allow me to golf in less discomfort while I wait for my knee replacement surgery but, unfortunately was not the case.

Thanks for giving us a try! We understand Supportive Apparel may not be right for everyone. We hope you find what you need to continue staying active.

STILL HAVE QUESTIONS?

Stoko accepts returns & exchanges within 60 days of the purchase date. 

We encourage you to put your Supportive Apparel to the test before deciding to return. Move in them, get sweaty, and give them all you got. There is a short break-in period with your Supportive Tights. This means it will take a bit of time before your tights begin to regulate and feel comfortable on your body. They can be a total pain at first and challenging to get used to, Supportive Apparel is very different than any other tights or braces you’ve tried. 

View Full Policy Terms

Stoko offers shipping within North America, please note that order processing may take an additional 1-2 business days from the stated shipping times below:

  • Standard 4-7 Business Days
  • Expedited 3 Business Days
  • Express 1-2 Business Days

International Shipping

At this time, we cannot ship or sell Stoko products outside of North America. Please feel free to sign up for our newsletter to keep up-to-date as we continue to grow.

More information here

Our products are registered as Class 1 Medical Devices through Health Canada and the FDA, which means that all our products are eligible for reimbursement through Health Spending Accounts (HSAs) and Flex Benefit Plans by all Canadian insurers, as well as some carriers in the U.S. This allows many of our customers to get their K1s free of charge or receive partial reimbursement.

Learn More

All Stoko products provide the same medical-grade bracing support, leveraging our Stoko Support System technology. It is really up to your personal preference what style would suit you the best!

All-Purpose: Both the Supportive Tight and K1 Flux are engineered to deliver support in a variety of activities and is our most recommended product for all-around use. From everyday activity to court sports to golf, the K1 Flux and Supportive Tight can do it all while also keeping you cool with knitted ventilation.

Ski & Snow: K1 Summit is engineered to deliver support and warmth. It was designed for snow sports, such as skiing, snowboarding, and cross-country skiing.

Run & Hike: K1 Tempo is engineered to deliver support and keep you cool in warm environments, such as: running, hiking, and training.  

Similar to other traditional/medical grade knee braces, the Supportive Tight provides support and stability to the body in compromised knee positions; however, the Supportive Tight achieves these outcomes through different means. The Supportive Tight relies on tension throughout the Stoko Support System to generate support, which is made up of cables that are integrated into the tights. The result is support that moves with your body and doesn’t compromise on comfort, aesthetics, or support.

Learn More Here

You can reach our Support Team at hello@stoko.com!

Stoko Support Center