FlowKeepers Calf Stimulator – 10s Interval Leg Circulation Devices, Wireless EMS Muscle Activator, FDA-Cleared, 2-Pack for Travel and Office with Storage Case – Ideal for Tired and Achy Legs

From the brand

FlowKeepers

Born from Science. Built for Your Life.” FlowKeepers — FDA-Cleared Leg Relief, Invented by a Yale Neurologist

Born from Science. Built for Your Life. FlowKeepers is not a consumer gadget. It is a clinically researched, FDA-Cleared medical device — invented by a Yale neurologist after 20 years of work — designed to deliver the kind of leg circulation support that was previously only available in clinical settings. No prescription needed.

Developed by Experts

Invented by Dr. Amiram Katz, MD — Yale University School of Medicine Dr. Katz spent over 20 years studying leg circulation before designing FlowKeepers from the ground up — optimizing pulse frequency, electrode geometry, and the 10-second activation interval through IRB-approved clinical research. FlowKeepers is the device he wished existed for his patients.

Backed by Real Clinical Science 3 IRB-approved studies. Independent Doppler measurements showing up to a 10-fold increase in femoral venous blood flow. 20–100% improvement in tissue oxygenation. FDA Clearance No. K160323. The evidence standard of a medical-grade device — available over the counter.

Complete Kit

Complete Kit — Ready Out of the Box 2 devices · Hypoallergenic gel pads (reusable 10+) · CR2032 batteries (pre-installed) · Carry case · Storage board (preserves gel pad adhesion) Nothing to buy separately.

Krenerb LLC — Hockessin, Delaware, USA One product. Made right. US-designed, backed by US patents (5,643,331; 6,002,965; 6,432,240), built to FDA-Cleared medical device standards.

ACTIVE CIRCULATION THERAPY — CLINICALLY PROVEN, NOT A TENS OR MUSCLE TRAINER: FlowKeepers uses gentle EMS to engage your calf muscle pump every 10 seconds, mimicking the blood-moving rhythm of walking to boost venous return while you sit, fly, or sleep — backed by 3 clinical studies. Unlike TENS devices (which block nerve pain) or EMS trainers (which build muscle), FlowKeepers is purpose-built for leg circulation support and comfort. FSA/HSA eligible.
Expert Neurologist Design – This EMS muscle stimulator for calves uses a unique timed interval created by a Yale specialist to mimic walking. The pulses allow veins to refill between contractions to support your natural leg circulation and health.
Truly Wireless Portability – Enjoy total freedom with the wireless muscle stimulator for legs that fits discreetly under your clothes. The silent and battery operated design makes it perfect for long flights or busy days when you are at a desk.
Active Circulation Support – Our leg circulation machine for home use is FDA cleared to provide active stimulation that is more effective than passive compression socks. It helps refresh your tired legs by increasing blood flow during periods of recovery.
15 Intensity Levels, Quiet, Sleep-Safe: Dial in your perfect comfort setting across 15 precision levels. The pulse is gentle enough to wear while sleeping — most users feel little sensation at lower settings. One-button operation, no app required.
Complete Ready To Use Kit – Your bundle features the electrical muscle stimulator devices for both legs along with eight hypoallergenic pads and a travel case. We include batteries and a tool so you can start improving your leg comfort as soon as you open it. Backed by a 30-day satisfaction guarantee. FSA/HSA eligible.
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.