Men’s | All-Purpose | Full-Length

K1 Flux

1st Generation

$358.00 $348.00 $478.00 Holiday Sale Sale
Black
Black
Black
Black
Black
Black
Black
Black
Black

Men’s | All-Purpose | Full-Length

K1 Flux

1st Generation

$358.00 $348.00 $478.00 Holiday Sale Sale
Almost gone

, no restock coming—act fast!

  • 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 100,000+ knees, 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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$358.00 $348.00 $478.00 Holiday 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 100,000+ Knees

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 290 reviews
80%
(232)
13%
(39)
4%
(11)
2%
(5)
1%
(3)
B
Bill J.

Fantastic

A
Aaron D.

Great product and company. The support feels amazing. I normally wear 2 knee braces for some activities. Can’t wait to try them skiing!

g
glenn f.
Godsend if you get the right size

This is from a Male POV, which should make sense below. No one has suffered both physically and mentally using Donjoy knee braces for 25 years. 3 soccer ACL tears and osteoarthritis. So, Stoko knee braces is a godsend. I wear them under my work jeans and very comfortable. There are Cons below, but if you get the right size, the K1 Flux works great. Still giving a 5.
Cons:
1. I’m a high end Medium per chart. Way too small. I exchanged for a L and it is barely big enough. I will go to XL on future purchases. I’m 5-9, 185, 33” waist.
2. Stoko designed the K1 for a eunuch. If you have man parts and get tights too small, you will suffer greatly. Not near enough material in the crotch area. The L I have now is borderline.
3. Hyperextension of the knee cannot be stopped with the Stoko braces. DJ braces have hard stops. I wear the tights daily for work and debating whether to use them for snowboarding due to risk of hyperextension.
4. Takes a bit of time to get on, which is nature of this product. Not much of a con. Need to set ankle band and work your way up.
5. Going to the restroom #1 not the easiest. Front opening material overlap is too much. Material really needs to be pulled apart and held open with 2 hands.
Pro’s:
1. When sized right, the support is great. I have abandoned the DJ knee braces for work. I’m in the skilled trades and on my feet all day and have not had an issue with knee support. I now wear low profile knee pads under my jeans over the tights.
2. Comfortable. No bulk, chaffing sores, soreness, etc from DJ knee braces. No more banging knee brace into things or getting caught.
3. Light and compact. Easily packs in a bag or luggage. Should easily fit into a man purse.
4. Going to the restroom #2 is not an issue.
5. Waist band sits above the hip bone, so it does not droop down. I later bought a 2nd gen which has a very low-riding waist and does not stay up and need to return.

B
Ben C.
Awesome Support Tights

Best support tights that I have. Compression tights are okay, but this goes beyond compression. You are able to adjust the K1 Tempo so you can feel the extra support in areas that they are made for. In my case I need the support on my knees, which it does extremely well.
Expensive, buy well worth it.

P
Paul C.
So far so good

I’m still getting used to them and the way to best use them. However I do feel the flux is giving me additional support and confidence.

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