SKU: 91483208898

Firefly

Sale price$54.00 Regular price$60.00
Save 10%

Pay in installments of $15.00 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Oct 9 - Oct 14

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

FireflyWe found out about Firefly in speaking with the Head PT Trainer at the Orlando Magic. Frankly, we like to think we're pretty on top of this stuff. Once we looked into the device, we were surprised how many pro teams are using it for recovery and we'd never heard of it! We also discovered on a recent trip to Nike that a bunch of their top athletes have also started using it. The best sign of a device that really works is when all the pros are using it,

We found out about Firefly in speaking with the Head PT/Trainer at the Orlando Magic. Frankly, we like to think we're pretty on top of this stuff. Once we looked into the device, we were surprised how many pro teams are using it for recovery and we'd never heard of it!

We also discovered on a recent trip to Nike that a bunch of their top athletes have also started using it.  The best sign of a device that really works is when all the pros are using it, but nobody wants to talk about it!

The device is called a Firefly. It's super easy to use and, for a recovery device, it's not expensive.

Originally developed as a recovery tool for orthopedic patients to keep blood flowing to their lower extremities post surgery, it's been adapted as an "active recovery" device that increases blood flow and dramatically lowers inflammation in your legs and feet.

What is it?

The Firefly sticks on your leg just below your knee and uses a low-grade electric buzzing signal that stimulates the peroneal nerve on the knee, contracting your calf muscle and increasing blood flow...

You simply stick it on, strap it in, sit back and watch your muscles twitch. The best part is that you can go to work, walk around, and carry on your day while the Firefly is helping you recover (but I would avoid driving as your foot can "flutter" if you have it turned up high)

The benefits are twofold:

  1. By circulating blood to your heart faster you're getting more oxygen in your blood, which is ideal for overall performance and recovery.
  2. Secondly, you're getting an increase in lower extremity microcirculation by 400%.

If you're trying to speed recovery from an injury, just performed a heavy training block, or are keen on multi-tasking, Firefly is your secret weapon to faster recovery.

Recent research papers validate Firefly as a device to increase blood flow although the real benefits are visible on diagnostic ultrasound. You can actually see the reduction in inflammation first hand as blood goes rushing through your lower extremities. 🦵

Personally I love Firefly. It's convenient. I can use it while hanging with my kids, while cooking dinner, even while sleeping. I can literally see it working, I can feel it working- although it's not uncomfortable or painful. Best of all, it makes a huge difference in recovery time and I always notice a major decrease in soreness after using it.

Firefly is a reusable device but has a limited lifespan. It's good for approximately 30 hours of use, then you dispose of it and use a new one. The reason is because the sticky gel becomes less effective over time and you can't swap the battery or recharge it.

Another important usage note to get the most out of your device is to use the knee strap. If you're purchasing for the first time, get the Starter Kit with the Knee Strap included!

While you may not need the knee strap the first time you use a firefly (as the gel is super sticky), after a few uses, you will want the knee strap to keep the firefly anchored firmly in place. It also makes it much easier to go walking around and do things while you have the firefly on. 

If your competition schedule requires heavy travel, you're trying to expedite recovery from an injury, or just performed a heavy training block, Firefly is your secret weapon to faster recovery.

How to use the device

The firefly operates at 7 different intensity levels. Athletes typically wear it from 2 - 4 hours at a time. However, many athletes are wearing it for the duration of overseas flights, or as an overnight aid from injury.

How to wear the Firefly

Firefly is placed directly over the fibular head (round bone below the joint line of the knee). Be careful not to impinge on the crease of the knee.

When activating Firefly look for calf pump and slight dorsiflexion as blood flow increases muscle contraction.

With your heel on the ground, you should see your foot move. The pulse becomes insignificant after a couple of minutes and you can carry on with your normal activities.

Twitching is more noticeable when your leg is flexed and less when your leg is straight.

If you need to recover quickly and/or are required to spend time in planes, trains, and automobiles, the firefly becomes invaluable.

Battery Duration and Information - Each Strap has approximately 30 hours of usage - These are one-time use straps so batteries cannot be recharged or replaced.

See how Jordan Hasay (Nike Pro Runner) uses her Firefly: 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 91483208898

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 18 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
SC6218
Draper, US
★★★★★ 5
Actually works, and really well
Color: Original Grey
I bought these because I got them on a great deal and was quite skeptical, but they actually worked exactly as advertised and I saw a huge difference after the first night! I understand why they don’t cover the whole foot like a regular sock (it would be stifling), but it would be incredible if they made a pair that go forward enough to cover the ball of the foot. One pair lasted about 3 weeks before the moisturizer wore out (I did notice a dropoff after washing, so for best results put them on when you’re clean and just for overnight, so you can avoid washing). Apologies for no photos- no one wants to see the before photos. These work so well I’ve just come back to order more even though I’m now paying full price. Definitely, definitely recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
L
Verified Purchase
Liana
Massapequa, US
★★★★★ 5
Comfortably and works
Color: Original Grey
❤️ I used these with magnesium lotion on my heals for 3 nights, soaked my feet every morning and cracked heals are gone!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
T
Verified Purchase
T. U.
Louisville, US
★★★★★ 5
A game changer for deep heel cracks and psoriasis!
Color: Original Grey, Color: Original Grey
If you have deep cracks or psoriasis on your heels, get these they are a total game changer! They hold in Vaseline and topical meds perfectly while I sleep, providing much needed relief without getting all over my sheets. My heels are healing faster and my callouses are softer and don’t split open because the moisture is trapped against the skin all night with the built in gel cushion lining instead of rubbing off. So much hydration. The fact that it is a 2 pack is perfect because while one pair is being washed and drying, you still have a set to wear. Very soft, stretchy, breathable, and easy to sleep in. I highly recommend them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
J
Verified Purchase
James P McMahon
Draper, US
★★★★★ 5
Great item!!
Color: Original Grey
These socks actually work!!! No more split skin on my heels!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
P
Verified Purchase
Paula S
New York, US
★★★★★ 3
Quality and Price
Color: Original Grey
For me a little tight on my ankles
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026

recommand products