Questions and answers
We've collected the 30 questions we receive most often by phone and e-mail – from choosing the size to hygiene and durability of the insoles.
What are biothermal insoles?
Biothermal insoles are a medical device.
On 6 June 2008, by decision of the Office for Registration of Medicinal Products, Medical Devices and Biocidal Products, ul. Ząbkowska 41, Warsaw, they were entered in the Register of Medical Devices under no. PL/DR 016012.
What are they for?
Biothermal insoles are a supportive and preventive therapeutic aid for people with thermoregulation disorders.
What do they do in the body?
Biothermal insoles are designed to raise body temperature and improve blood circulation. With a daily thermal correction that works by shielding your own energy, hands and feet become warm. The insoles give warm feet to people with microcirculation disorders caused by diabetes and peripheral atherosclerosis. They are a natural aid supporting medical treatment for people of all ages.
Where should they be worn?
The insoles are intended for closed shoes with a covered heel. They can be used all season long, e.g. in low shoes, sandals, slippers with a covered heel, boots or sports shoes. The shoes should be loose – do not use the insoles in tight shoes, so as not to restrict blood circulation.
How do they work?
Used as shoe insoles, biothermal insoles shield the thermal energy of the feet. By reflecting heat rather than dissipating it, they influence the body's thermoregulation processes and, with them, microcirculation.
The insoles provide a thermal stimulus of low intensity and long duration. Under the influence of the thermal stimulus, the blood vessels dilate. These changes cause a significant increase in blood supply to the skin, which also affects the functioning of internal organs and the cardiorespiratory system and stimulates immune responses.
Using biothermal insoles raises the skin temperature of the foot, lower leg and thigh.
Has the effect of biothermal insoles been confirmed by scientific research?
Yes, the positive effect of biothermal insoles has been confirmed by scientific research carried out at the L. Rydygier Collegium Medicum in Bydgoszcz and at the Laboratory of Biotronics and Electrophotography in Kielce.
It is also confirmed by the opinions of doctors and insole users held by our company.
What are the insoles made of?
The material biothermal insoles are made of is polyethylene-based; its composition is protected by patent law.
The insoles are wide – how do I put them in, will they fit in my shoe?
Roll the insole up, push it to the toe of the shoe, then spread it out by hand so that no lumps form. If the insole is too long, you can shorten it at the heel end. The width stays unchanged – the insole must wrap around the foot. Do not trim the insole's width, as it will then no longer do its job. Cut to the shape of the foot, it becomes an ordinary shoe "lining".
Won't the insoles move around in the shoe when I walk?
If the insoles slip out of the shoes, stick them in three places with double-sided tape. Moving the insoles to other shoes is not recommended.
Do shoes for the insoles have to be much bigger?
No, it is enough that they are broken in and loose. The insoles are springy, so they adapt perfectly to the shape of the foot and the shoe.
How thick are the insoles?
The insoles are approx. 4 mm thick.
Which side of the insole goes up in the shoe?
Printed side towards the foot, smooth side towards the shoe.
Do I put my feet directly on the insoles? Should I wear socks?
The insoles must not be used directly against bare feet. Wear cotton socks with a terry sole (not elastic or nylon ones, as they do not absorb sweat).
Can I give my insoles to someone else?
No, for hygiene reasons the insoles should not be passed on to another person.
Can I move the insoles to other shoes?
Moving the insoles to other shoes is not advisable. Every shoe has a different shape, and the insoles adapt to the shape of the foot and the shoe. Take particular care in autumn and winter not to put "warm and heated" feet, e.g. from house slippers, into cold outdoor shoes without insoles, as this can easily lead to a cold.
How do I keep the insoles clean?
Once a week, wash the insoles with a brush and a mild agent such as soap, rinse and dry them.
How long can biothermal insoles be worn?
The insoles can be worn for several hours a day, depending on how you feel. People with circulatory disorders should wear the insoles a little longer.
However, in the case of severe arterial stenosis, cerebral aneurysms, diagnosed atherosclerotic plaques, and high and fluctuating blood pressure or high and fluctuating blood sugar, you can start by wearing the insoles for 15 minutes, taking a half-hour to one-hour break, and gradually shortening the breaks.
Are there any contraindications to using the insoles?
Yes, the insoles must not be used during immunosuppressive treatment, during radiotherapy for cancer, before surgery, or with kidney stones and gallstones (conditions in which improving microcirculation is not advisable).
How long do the insoles last? How often should they be replaced?
The insoles wear out only through walking, especially where the pressure is greatest, i.e. under the heel and toes. They then lose their springiness and elasticity, become thinner and "trodden down", and stop working. At that point they should be replaced with new ones. This depends on the user's weight and how long they are used.
How long can they be stored? Do unused insoles lose their properties?
Unused insoles can be stored for even several years without losing their properties. They wear out only through walking.
When buying insoles, should I give my shoe size, foot length or insole number?
When ordering insoles, please state your shoe size according to the size chart below:
What is required to achieve results with the insoles?
An essential element and condition for achieving results with biothermal insoles is washing your feet and changing your socks frequently (to improve the removal of substances excreted by the body).
How often should I change my socks?
During the first month of using the insoles, change your socks several times a day and wash your feet to support and improve the removal of substances excreted by the body. After a month of use, change your socks at least three times a day.
If I'm at work and can't wash my feet or change my socks often, what should I do?
In that case you can use felt insoles (place the felt insoles on top of the biothermal insoles). Additionally using felt insoles helps the body cleanse itself faster, especially for people who cannot change their socks often.
Can socks and felt insoles be washed?
Yes, both socks and felt insoles should be washed.
Where can I ask about biothermal insoles?
In pharmacies, medical supply and herbal shops, and directly from the manufacturer.
Does the product come with instructions for use?
Yes, each pair of insoles comes with a detailed information leaflet, which should be read before using the insoles.
Does the manufacturer sell biothermal insoles by mail order?
Yes, the insoles can be ordered through the online store, by phone or by post.
What details should I provide when ordering insoles?
Please provide your full name, address with postcode, shoe size and the number of pairs you are ordering.
How long does it take to fulfil an order?
Orders are fulfilled within 1 to 2 weeks.
