Under what circumstances is it not suitable to use silicone insoles?

Under what circumstances is it not suitable to use silicone insoles?
Although silicone insoles have many practical functions, they are not suitable for use in certain specific circumstances, otherwise they may affect foot health or wearing experience. The following details the situations in which they are not suitable for use from the dimensions of material characteristics, foot condition, and usage scenarios:
1. Foot diseases or special physiological needs scenarios
Severe foot deformities or pathological problems
Such as severe flat feet, high arches, acute plantar fasciitis, Achilles tendonitis, etc., the cushioning and support of silicone insoles may be insufficient and cannot replace professional medical orthopedic insoles (customized support structure insoles must be selected according to the doctor's advice).
Diabetic patients have sensitive foot nerves and high requirements for pressure distribution. Ordinary silicone insoles may cause excessive local pressure due to uneven support, increasing the risk of ulcers, and medical decompression insoles are required.
Foot wounds or infection period
When the heels and soles have blisters, damage or fungal infections (such as athlete's foot), although the silicone material is easy to clean, it has poor breathability and may aggravate the hot and humid environment, which is not conducive to wound healing or cause the spread of infection.
2. Unsuitable scenarios due to material characteristics
People who are allergic to silicone
Some people may be allergic to the additives in silicone (such as vulcanizers and pigments). After use, they may experience itching, redness and swelling of the foot skin. They need to stop using it immediately and change the material (such as cotton or wool insoles).
Scenarios requiring high breathability
Pure silicone material has weak breathability. If used in a high temperature environment or during strenuous exercise, it is easy to cause a lot of sweating, stuffiness and discomfort in the feet, and even cause foot odor (it is more suitable to choose insoles made of porous breathable or composite sweat-absorbing materials).
3. Situations where the shoe type does not match the usage requirements
Shoe types with narrow space inside the shoe
Such as pointed high heels, thin leather shoes, etc., the silicone insole itself has a certain thickness. If there is insufficient space inside the shoe, it will squeeze the toes, causing foot pain, poor blood circulation, and even affecting walking posture.
Scenarios that require extreme lightness
Silicone insoles are relatively heavy (especially thick ones). In scenarios such as hiking and running that require lightweight equipment, they may increase the burden on the feet and affect the flexibility of movement (it is more suitable to choose lightweight materials such as EVA and memory foam).
4. Special use environments or groups
Non-professional choices during the growth and development period of children
Children's feet are in the development stage. If you blindly use non-professional designed silicone insoles (such as ordinary ones without arch support), it may interfere with the normal arch formation. It is recommended to choose corrective insoles designed for children under the guidance of a doctor.
Scenarios that require frequent contact with water or oil
Although silicone is washable, long-term immersion in water (such as frequent walking in rainy days) or contact with oil may accelerate the aging of the material and reduce elasticity, and the oil is difficult to clean thoroughly, affecting the use effect.
5. Risks of inferior silicone insoles
If you buy inferior silicone (such as industrial-grade recycled materials), there may be problems such as odor, easy hardening, and chipping. Not only can it not provide protection, but it may also rub the feet due to the rough material, or release harmful substances, which is harmful to health.