The FlowKeepers® Pro Bundle
Relieve achy, tired legs while you sit, sleep or travel.
- FDA-cleared to temporarily boost leg circulation
- Clinically proven ache reduction
- No wires, no charging, no prescription
Questions? (302) 388-5016
Why your legs feel it
Sitting for hours is real and uncomfortable.
- Achy, soft ankles after long flights or drives
- Sore, achy calf muscles from sitting at a desk all day
- Fatigued legs that make you feel sluggish
- Reduced circulation linked to prolonged immobility
- Discomfort that worsens with age, obesity or smoking
- Circulation affected by medication
What FlowKeepers® does
Boost blood flow. Soothe achy, heavy legs.
- Temporarily relieves leg discomfort and boosts local blood flow
- Improves circulation and reduces muscle tension
- Helps relieve fatigue and that heavy-leg feeling
- Enhances post-exercise recovery
- Temporarily reduces pain, with temporary relief from sore and aching muscles
- Supports lower limb comfort after prolonged sitting or activity
The science
Invented by a Yale neurologist. Cleared by the FDA.
A clinically researched, FDA-cleared medical device, built over more than 20 years of work on leg circulation, delivering the kind of support previously only available in clinical settings.
The inventor
“Vascular and vein-related problems go unnoticed until a health catastrophe occurs. I developed FlowKeepers® using decades of research to create a practical, safe solution that is significantly more effective than anything else on the market.”
Dr. Amiram Katz, MD · Neurologist, Yale University School of Medicine
Public FDA record
510(k) clearance K160323
- Device type
- Powered muscle stimulator, Class II
Cleared to
- To temporarily increase local blood circulation in healthy leg muscles
- To stimulate healthy muscles in order to improve and facilitate muscle performance
- For temporary relief of pain associated with sore and aching muscles of the lower extremities (legs) due to strain from exercise or normal household and work activities
The only direct muscle activation device available in the USA for increasing blood circulation in legs with FDA clearance.
FDA cleared as powered muscle stimulator for temporary improvement of local blood circulation in healthy leg muscles. Clinical observations support FDA cleared indications. Results may vary.
How it works
Your calves are your “second heart.” Sitting stops them pumping.
When you sit for hours, blood flow slows in your lower legs. FlowKeepers® uses proven electrical muscle stimulation to activate your calf muscles every 10 seconds, mimicking the natural pumping action of walking, so you can boost circulation while you rest, sit or sleep.
See it in 15 seconds
Heavy, achy legs? Apply a patch.
- 1Stick it on the calfOne on each leg, worn discreetly under clothing.
- 2Press and hold +Hold for 3 seconds until the light flashes, then press + to the level that feels right.
- 3Get on with your dayIt works in the background and switches off after 10 hours.
What it feels like
Gentle at 1. Noticeable at 15.
You choose the strength. Press + until you feel a gentle muscle contraction, typically 5 to 10 presses. Increase levels slowly.
Little sensation. Good for getting used to it.
A gentle calf contraction you can see and feel.
A firmer contraction.
Where people wear it
Made for the moments you sit still
Don't let long flights or a desk job wreck your leg comfort. For frequent flyers and road trippers, office and remote workers, seniors and active retirees, and anyone with leg discomfort or sluggish circulation. Tap to watch.
Compare
Not all circulation devices are equal
FlowKeepers® keeps your calves actively pumping. Compression socks are passive.
Price ranges from common US retail listings, October 2026.
Reviews
Loved by our customers
★★★★★
Relieves most of the discomfort
“My calves ache a lot, and when I use the FlowKeepers, it changes the sensation for me, relieving most of the discomfort. It's easy to use, and the battery lasts a long time. Great customer service!”
Easy to use
★★★★★
A true test of its effectiveness
“The FlowKeepers device worked like a charm! It worked flawlessly during my entire flight to Spain and Calgary. It provided great relief. My ankles were not swollen at all! A true test of its effectiveness.”
Travel
★★★★★
Keeps the swelling down
“I started using this device a few years ago and noticed it helps keep the swelling down and I can walk around better.”
Everyday use
Our promise
Try it risk free. If you don't feel the difference, get a full refund.
Use FlowKeepers® on your next flight, through a work week, on the couch. If you are not completely satisfied, return it within 30 days for a full refund.
What's in the box
Ready to go, right out of the box
- FlowKeepers® devices 2
- Hypoallergenic gel pads 8, reusable 10+ times
- CR2032 batteries included
- Premium travel case 1
- Pad storage board and battery tool 1 each
- Instructions for use 1
Refills and add-ons
Fresh pads, right when you need them
Pads lose their stick over time. The refill plan sends a new pack before yours wear out, for 15% less.
Replacement gel pads
16 FDA-cleared pads (8 pairs), reusable more than 10 times.
CR2032 batteries
A 10-pack of Maxell high-energy lithium coin cells. Each one lasts up to 20 hours in your FlowKeepers®.
FAQ
Before you buy
Call us. A real person picks up or calls back. You can also email us.
Does it hurt? What does it feel like?
No. FlowKeepers® is specifically designed to feel like nothing at all. Unlike conventional TENS units, it uses a slow, gentle pulse designed by Dr. Katz to activate the calf muscle pump with only light sensation. You choose from 15 levels and can turn it down or off at any time.
How long can I wear it?
As long as you are sitting or resting: a whole flight, a workday or an evening. A built-in safety timer switches it off after 10 hours.
Can I wear it while I sleep?
Yes. It is quiet and gentle enough to wear while sleeping, and the 10-hour timer switches it off for you.
Can I wear it on a plane?
Yes. It is small, wire-free and runs on coin cell batteries with no AC adapter, so it passes through security without issues and you can wear it in your seat.
How long do the pads and batteries last?
Each CR2032 battery lasts up to 20 hours. Gel pads can be reused more than 10 times when you store them on the included board. The 8 pads in the kit cover about 3 to 6 weeks of daily use.
Will it fit my legs?
The device fits comfortably on the calf of most adults, regardless of leg size. If you are unsure, call us.
Do I need a prescription?
No. FlowKeepers® is FDA-cleared for safety and effectiveness and available without a prescription.
Can I use my FSA or HSA card?
Yes. FlowKeepers® is FSA/HSA eligible.
Who should not use it?
Do not use it with an active DVT (deep vein thrombosis), a pacemaker or ICD, during pregnancy, under age 18, if you are allergic to electrode gels, or on broken or infected skin. If you have a heart condition or epilepsy, ask your physician first.
What if it is not for me?
Return it within 30 days for a full refund, no questions asked.
Ready when you are
Relieve achy, tired legs while you sit, sleep or travel.
$49.99 for the Pro Bundle · free shipping
- 30-day guarantee
- FSA / HSA eligible
- Ships in 24 hours
Important safety information. FlowKeepers® is FDA-cleared as a powered muscle stimulator (510(k) K160323) to temporarily increase local blood circulation in healthy leg muscles, to stimulate healthy muscles to improve muscle performance, and for temporary relief of sore and aching leg muscles. FlowKeepers® is not for everyone. Review the warnings in the user guide before use.
Not intended to diagnose, treat, cure or prevent any disease. Individual results may vary.
California Proposition 65 warning: this product can expose you to chemicals including Bisphenol A (BPA), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.