100,000+ satisfied customers

Better blood flow.
Anytime, anywhere.

Clinically proven to increase microcirculatory blood flow by up to 400%

Shop Firefly

As Seen On Shark Tank

Boost circulation and feel your best.

Firefly actively increases blood flow, naturally easing soreness, improving comfort, and helping you feel fresh, whether after workouts, during travel, or throughout your daily routine.

Peel. Place. Press start.

Firefly sends gentle pulses to the peroneal nerve just below your knee. Your calf muscles contract and relax, and your foot moves with each pulse. That’s the Firefly flutter.

Peel

Peel the backing off the gel.
Place

Outer side of the leg, just below the knee, lined up with the fibular head.
Press start

Hold + for 1 second. Use the lowest level that gives you the flutter.

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Up to 400% More lower-limb microcirculatory blood flow, clinically proven
30 hr Battery in every device
1 oz Wire-free, worn just below the knee

100,000+ customers.
1,500+ teams.
One small device.

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Arrive Feeling Fresh

Long-haul flights slow circulation and leave legs heavy, tired, and stiff. Firefly keeps blood moving throughout your flight so you land ready to go.

Circulation, Even While Sitting

Hours in a cramped seat cuts off healthy blood flow. Firefly works while you sit, gently activating your calf muscles like a natural walk to keep circulation moving.

No More Tired Feeling Legs

Skip post-flight soreness, stiffness, and fatigue. Travelers rely on Firefly to step off the plane refreshed and ready for whatever's next.

More About Firefly For Travel

Recovery That Works

Skip the recovery day. Firefly boosts blood flow to fatigued muscles, bringing your body back to peak performance faster.

Reach Peak Performance

Train harder, bounce back faster, and show up ready to compete. Firefly is trusted by over 1,500 pro and college teams to keep athletes performing at their best.

Recover On The Go

No cords, no boots, no bulky gear. Firefly slips on in seconds so you can recover in the car, on the bus, on the plane, or between sets without skipping a beat.

More About Firefly For Athletes

Support Healthy Circulation

Firefly uses gentle neuromuscular stimulation of the peroneal nerve to boost blood flow up to 400%, helping support circulation while you sit, travel, or recover.

Simple & Easy To Use

Just peel, place below the knee, and press start. Firefly is fully portable, lightweight, and designed to fit seamlessly into your day.

Backed By Science

Firefly's effects are validated by peer-reviewed research from academics working in institutions including Barts and The London School of Medicine and Dentistry, and Loughborough University.

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1,500+ professional & college teams trust Firefly.

Worn by the best.

Olympic champions and pro athletes trust Firefly to recover faster and get back to training sooner.

Tara Davis-Woodhall2024 Olympic gold medalist, long jump

“Firefly’s products have been integral to my training regimen.”

The proof

Can something this small really work?

Firefly is an FDA-cleared Class II medical device for increasing local blood circulation, backed by peer-reviewed research.

Microcirculatory blood flow

Clinically proven to increase lower-limb microcirculatory blood flow by up to 400%.¹

Findings

Better than intermittent compression boots at increasing microcirculation Microvascular Research

Better than graduated compression socks at reducing perceived muscle soreness School of Sport, Exercise and Health Sciences, Loughborough University

Aids the physiological and psychological measures of recovery Journal of Science and Medicine in Sport

¹ Validated by peer-reviewed research from academics working in institutions including Barts and The London School of Medicine and Dentistry, and Loughborough University.

See the research

2,000+ five-star reviews

100,000+ customers.

Proven recovery device at the top of the Seven Summit

We are Seven summiters and used Firefly device to recover faster at Mt.Aconcagua, Mt.Elbrus, and Mt.Fuji. It is so light and battery lasts 30 hours and can work even in cold harsh condiitions at high altitude. From flying in longer hours to climbing above 22,000 feets, we trust our Firefly.

A great recovery tool for triathletes

As a triathlete, I have multiple training sessions a day, so in between I do all I can to recover. When I wear firefly after a ride before a run, for example, I can genuinely feel a freshness in my legs during that run. Also, flying with firefly on is one of my favorite ways to also use the product! Total game changer!

The best device for travel and recovery!!

As a track athlete who lives in Hawaii I fly for every competition. After using firefly during my travel days I show up ready for competition without heavy legs from the long flight! I will forever be using firefly

Undeniable

I have never felt so good on a flight or aftwards. I have been traveling internationally for 20+ years and truly never felt better. First used on a 14+ hr flight and never an ache or soreness. Legs felt fresh and more importantly buttocks, back and rest of the body felt equally as good! I won't fly again without them!

Life Changing

I have used these on multiple occasions for travel, traveling on plane and long car rides my body normally feel so tired, heavy and sluggish, but with the firefly’s I can get off a plane and be ready for a training session feeling good! I travel a lot for sports and this has been a game changer

Firefly Changed the Game!

As a D1 track and field athlete who works full time AND has a puppy in addition to my studies & sport, it is hard for me to find time to recover... However, firefly has changed the game. I can recover during work, travel and relaxation time with almost no effort. Drastically helped.

Best Recovery Device for Runners!!

Firefly Recovery has been an absolute game-changer for my performance and recovery as a Division 1 distance runner. At this level, every training session counts, but so does every hour of recovery. Firefly allows me to train hard, bounce back faster, and show up ready for the next session with less soreness and fatigue.

A great recovery tool for triathletes

As a triathlete, I have multiple training sessions a day, so in between I do all I can to recover. When I wear firefly after a ride before a run, for example, I can genuinely feel a freshness in my legs during that run. Also, flying with firefly on is one of my favorite ways to also use the product! Total game changer!

Complete Recovery

Having two ACL surgeries as a division 1 lacrosse player training every single day. In conference playing Friday and Sunday games. Recovery is just as important for me as training. Firefly Recovery has changed my life. My legs have never felt better so thank you Firefly for making my life as a college athlete so much better.

The best device for travel and recovery!!

As a track athlete who lives in Hawaii I fly for every competition. After using firefly during my travel days I show up ready for competition without heavy legs from the long flight! I will forever be using firefly

User for life!!

As a D1 track and cross country athlete, I love having firefly recovery with me during workouts all year round! It is extremely helpful with shortening my recovery period so that I can get back to the next workout with fresh legs! Have been using this product for years and will continue to use for my entire running career!

Game changer!

As a professional ballet dancer, I need my legs to recover quickly. I love these devices because I can prioritize recovery whether on the go or sitting on my couch at the end of a long rehearsal day. I would recommend these to everyone - athletes, moms on the go, EVERYONE!

Life Changing

I have used these on multiple occasions for travel, traveling on plane and long car rides my body normally feel so tired, heavy and sluggish, but with the firefly’s I can get off a plane and be ready for a training session feeling good! I travel a lot for sports and this has been a game changer

Firefly Changed the Game!

As a D1 track and field athlete who works full time AND has a puppy in addition to my studies & sport, it is hard for me to find time to recover... However, firefly has changed the game. I can recover during work, travel and relaxation time with almost no effort. Drastically helped.

Complete Recovery

Having two ACL surgeries as a division 1 lacrosse player training every single day. In conference playing Friday and Sunday games. Recovery is just as important for me as training. Firefly Recovery has changed my life. My legs have never felt better so thank you Firefly for making my life as a college athlete so much better.

Game changer!

As a professional ballet dancer, I need my legs to recover quickly. I love these devices because I can prioritize recovery whether on the go or sitting on my couch at the end of a long rehearsal day. I would recommend these to everyone - athletes, moms on the go, EVERYONE!

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Better blood flow.
Anytime, anywhere.

Boost circulation and feel your best.

Travel Comfort

Athletic Performance

Circulation & Wellness

Firefly uses gentle stimulation to increase blood flow up to 400%*

Peel. Place. Press start.

Peel

Place

Press start

Subscribe & save 15%

HSA/FSA eligible

Free US shipping