Questions & Answers
When and how long should I wear the firefly devices?
Recommended usage will optimize recovery so you can train harder
and perform better. Firefly Recovery is used for warm up (30-60
minutes) post workout recovery (1-4 hours) and travel (duration of
Should I use firefly during training or workout?
No, it is not recommended to use firefly during training or a workout.
However, as firefly is a portable device, it can be used when walking,
stretching or on-the-go.
Why is the Knee Strap important?
Knee Straps keep firefly devices comfortably and securely in place,
especially when you are in motion. As the gel-based backing on the
devices may become less adhesive after multiple uses, the knee
strap will help to ensure proper stimulation from the device.
How long does the firefly work?
When used as recommended, the device has an estimated battery
life of 30 hours. The number of uses will depend upon the length of
each recovery session.
Is the firefly device painful to use?
The firefly device should not be painful. You will feel muscles in the
lower leg contract every second, which causes your foot to twitch
(firefly flutter). It may take a few moments to adjust to the sensation,
but the movement is critical to increasing blood flow and recovery. If the sensation is too strong, decrease the level.
How do I turn the firefly on and off?
Press and hold down the (+) button for 3-seconds to turn the device
Press and hold down the (-) button for 3-seconds to turn
OFF your device.
Can I wear firefly during travel?
We suggest using the firefly for the duration of travel to promote blood
flow and avoid tired legs. The firefly device can safely be worn or
carried through TSA security.
Can firefly be used on other parts of the body?
The device is specifically meant to be applied on the peroneal nerve
to increase systemic blood flow. We have not researched our
technology on other nerves in the body.
How does firefly differ from muscle stim?
The firefly is a modified NMES that stimulates a nerve vs. a muscle, it
is not a muscle stim or TENS unit. Stimulating the peroneal nerve
causes muscles to contract and to increase blood flow. Stimulating a
muscle (with a TENS unit) for extended periods of time can cause
muscle fatigue. The firefly safely avoids muscle fatigue that can be
caused by TENS.
Is firefly similar to other recovery technologies?
The firefly is similar to pneumatic
compression, both modalities increase blood flow. The firefly is unique as it moves 3X more blood, is fully portable, and mobile. This allows for on-the-go recovery – anywhere, anytime.
Can I sleep with the firefly device on?
It is safe to sleep with the devices on. However, quality sleep is essential for optimal recovery; if the devices are disruptive to your
sleep, lower the settings or turn them off.
Can I wear the firefly device in the shower, ice bath or pool?
No. The firefly device is not designed to be used in water as it is not waterproof.
How do I find the correct level of stimulation?
At the correct level, you should see an outward movement of the
foot (the firefly "flutter"). If you only see muscle twitches in the lower
leg but not the foot, increase the level by pressing the (+) button or
adjust the device placement. It is optimal to wear the firefly at the
lowest setting that delivers a “flutter”.
Who should not use the firefly device?
Individuals with pacemakers and recently diagnosed DVT should not
use the firefly. See the instructions that accompany the device for a
full list of contraindications, warnings and precautions.
Is the firefly device reusable?
The firefly device is reusable during the life of the battery. Afterwards,
the battery can be removed and recycled like any household battery.
Do you have a return policy?
In the unlikely event that you are not satisfied with your purchase,
you may return your firefly devices within thirty (30) days of the
delivery date. All returns and exchanges are subject to the conditions in our Return Policy.