Sleek lines, mirror-smooth metal, and a design in which virtually every part serves a function: the
E-Stim Systems Flo Electrode is a bipolar insertable electrode for those who enjoy combining electroplay with a sophisticatedly shaped metal toy. The Flo is available in
Small and Large. The Small size is intentionally compact and accessible, while the Large has a longer shaft and a significantly larger head for greater depth and a fuller sensation.
Both versions are crafted from high-quality aircraft-grade aluminum and then polished to a mirror finish. The Flo is primarily designed for vaginal use, but according to E-Stim Systems, it is also suitable for anal use. Thanks to its bipolar construction, both electrical contact points are located within the same electrode. This means you don’t need a second separate electrode to complete the circuit.
An electrode that lives up to its name
The name Flo refers to the flowing shape that runs from the wide base, through the tapered neck, to the rounded tip. No sharp angles or industrial look, but an organic silhouette that resembles a metal sculpture almost more than a technical electrosex accessory.
During vaginal use, the wider base can rest against the external anatomy, bringing the internal and external contact zones close together. During anal use, the wide base also ensures that the electrode cannot be inserted all the way inside. A groove in the base provides extra grip during insertion and removal.
Small Flo: Compact and Refined
The
E-Stim Systems Small Flo has a total length of
100 mm, of which up to
70 mm is insertable. The rounded head has a diameter of
25 mm, and the wide base measures
50 mm. It weighs 192 grams.
Thanks to its relatively modest head diameter, the Small is the more accessible option of the two. You get the characteristic Flo design and the solid feel of polished aluminum without immediately opting for a large diameter. This makes the Small appealing to users looking for their first metal insertable electrode, as well as to experienced e-stim enthusiasts who specifically want a slimmer size.
Large Flo: Longer, Deeper, and Fuller
The
E-Stim Systems Large Flo takes things a clear step further. This model is
120 mm long and has an insertable length of no less than
110 mm. The head expands to
37.5 mm in diameter, while the base remains 50 mm wide, just like the Small. Weighing
268 grams, the Large also feels noticeably more substantial.
E-Stim Systems deliberately equipped the Large with a longer shaft and larger head. So the difference from the Small isn’t just a few extra millimeters: the Large reaches deeper and, thanks to its 12.5 mm larger head diameter, provides significantly more fullness. If you see the Small as an elegant introduction, the Large offers the same smooth sensation—but an octave lower.
Small or Large: which Flo is right for you?
The choice is primarily determined by the desired diameter and insertion depth. Small has a 25-mm head and remains relatively compact with a 70-mm insertable length.
Large increases the head diameter to 37.5 mm and offers a significantly longer insertable length of 110 mm.
The base diameter is the same for both models: 50 mm. So you don’t choose Large for a wider base, but specifically for the larger head, longer neck, and heavier weight.
- Small: 100 mm total, 70 mm insertable, head Ø25 mm, base Ø50 mm, 192 g
- Large: 120 mm total, 110 mm insertable, head Ø37.5 mm, base Ø50 mm, 268 g
Bipolar design with contacts on top and bottom
On both Flo electrodes, the electrical contact zones are located
on the top and bottom rather than on the left and right. E-Stim Systems also uses this configuration in other premium insertable electrodes and chose it to allow electrical sensations to travel through the body differently than with a traditional side-by-side contact arrangement.
Because the Flo is
bipolar, a single electrode contains both poles needed to complete the electrical circuit. This allows the Flo to be connected independently to a single compatible channel on an e-stim power box.
Two 4 mm connectors in the base
Both the Small and Large models have
2 × 4 mm connectors in the base. For use with an E-Stim Systems powerbox, you therefore need a cable with 4 mm connectors.
This cable is not included with the Flo and must be purchased separately if you do not already have one.
E-Stim Systems recommends its own low-profile connectors for extended wear. These protrude less from the base and can therefore be more practical when the electrode is worn under clothing.
Aircraft-grade aluminum with a mirror finish
The Flo is manufactured in the United Kingdom from
aircraft-grade aluminum and then polished to a mirror-smooth finish. The metal not only gives the electrode its characteristic weight but also allows for a very smooth surface.
For insertion and proper electrical conductivity, E-Stim Systems strongly recommends a
water-based lubricant, such as a suitable conductive gel. According to the manufacturer, do not use silicone or hybrid lubricants with this electrode.
Dismountable for thorough cleaning
A key feature of E-Stim Systems’ premium electrodes is that they can be taken apart. For daily cleaning, the Flo can be washed with warm water and a mild detergent. For a more thorough cleaning, you can disassemble the electrode and clean the metal parts separately.
Avoid harsh, alkaline, and corrosive cleaning agents. Rinse away any cleaning residue thoroughly and allow all parts—paying special attention to the 4 mm connectors—to
dry completely before reassembling and storing the electrode. Both versions come in a reusable protective storage case.
Safe Use of the Flo Electrode
Connect the electrode while the power box is turned off, and always start at the lowest intensity. Gradually increase the stimulation and stop if the sensation becomes sharp, burning, painful, or otherwise unpleasant.
E-Stim Systems recommends limiting electrostimulation to areas below the waist and never using the electrodes around the head or neck.
Do not use e-stim during pregnancy, if you have epilepsy, a heart condition, or an electronic implant such as a pacemaker or insulin pump. Use the electrode only on healthy, non-irritated tissue and always follow the safety instructions for your powerbox.
General Features
- Brand: E-Stim Systems
- Model: Flo Electrode
- Available in Small and Large
- Type: bipolar insertable electrode
- Primarily designed for vaginal use
- According to E-Stim Systems, also suitable for anal use
- Material: aircraft-grade aluminum
- High-gloss polished finish
- Contact zones on top and bottom
- Wide base with grip groove
- 2 × 4 mm connectors in the base
- 4 mm cable not included
- Fully disassemblable for thorough cleaning
- Reusable protective storage case included
- Lifetime E-Stim Systems warranty for the original purchaser according to the manufacturer’s warranty terms
FAQ
What is the difference between the E-Stim Systems Flo Electrode Small and Large?The Small has a head diameter of 25 mm, a total length of 100 mm, and an insertable length of 70 mm. The Large has a significantly larger head of 37.5 mm and measures 120 mm, of which 110 mm is insertable. The Small weighs 192 grams and the Large weighs 268 grams. The base of both versions has a diameter of 50 mm.
Is the E-Stim Systems Flo Electrode suitable for vaginal and anal use?Yes. E-Stim Systems designed the Flo primarily for vaginal use, but states that both the Small and Large versions can also be used anally. The wide 50-mm base provides a clear limit in this regard.
Do I need a second electrode with the E-Stim Systems Flo Electrode?No. The Flo is a bipolar electrode and contains two electrical contact zones. To use it, connect both 4 mm connectors to a compatible channel on your e-stim power box.
Does the E-Stim Systems Flo Electrode come with a 4 mm cable?No. Both the Small and Large Flo have two 4 mm connectors, but the required cable is not included. You’ll need a compatible 4 mm cable for an E-Stim Systems power box.
What lubricant should I use with the E-Stim Systems Flo Electrode?E-Stim Systems recommends a water-based lubricant for easy insertion and good electrical conductivity. The manufacturer advises against using silicone-based and hybrid lubricants with these electrodes.
Whether you choose the compact Small Flo or the longer and fuller
Large Flo, both combine a well-thought-out bipolar design with the almost sculptural lines that give this E-Stim electrode its name. We’ll ship your selection quickly and in completely discreet packaging, so the contents remain strictly between you and the package while in transit.
