Tunit and Styrene Sole
Tunit (Leatherboard Sole, KV) – a type of block sole made from leatherboard sheets. It is a mixture of vulcanized rubber, recycled petroleum, a vulcanizing agent, and mineral additives.
Types of Leatherboard
- Summer (3mm thick) – smooth, tread relief is formed by embossing or laser processing.
- Demi-season – leatherboard with a pre-made tread, 3.5mm thick.
- Demi-season with welt – has an attached welt that protects shoes from moisture.
- Summer with welt – the welt serves a decorative function.
Pros:
- Lightweight material, comfortable for prolonged wear.
- Flexibility even at low temperatures.
- Eco-friendly – made from recycled materials.
- More affordable compared to natural leather.
Cons:
- Absorbs moisture, unsuitable for wet conditions.
- Less durable than natural leather.
- Not resistant to aggressive chemicals.
- May deform under heavy load.
- Becomes stiffer in extreme cold.
Styrene Sole
We also offer styrene soles, ideal for demi-season and winter footwear with heels. They have high wear resistance and versatility.
Advantages of Styrene Sole
- High wear resistance.
- Optimal stiffness and flexibility.
- Different thickness: toe area – 6mm, heel area – 3.5mm.
- Can be used in monoblocks and block soles.
- In-house production – full quality control.
Production Process
- Removing excess material after casting.
- Final processing in the KV workshop.
- Shaping the sole with special knives.
- Decorating with metal inserts.
- Laser engraving – possible even on colored materials.

Heel – the support part of the shoe, attached to the heel with staples or screws. Made of
ABS (acrylonitrile butadiene styrene) or polystyrene.
Heel Materials
- Polystyrene – cheaper, less durable, more porous.
- ABS – stronger, more elastic, used for high and lacquered heels.
Heel Composition
- Lapidary part.
- Counter.
- Back (rear) side.
- Heel cap and heel part.
- Tube or rod with a tube.
Types of Heel Caps
- Standard (5mm).
- 8mm thick.
- For full counter.
- For leather-covered heels.
Types of Heel Finishes
- SL – durable coating, glossy effect.
- Flock – velvet-like surface.
- Metalization, pad printing, various textures.
Our production facilities allow us to create any type of heel on demand.
Contact us now or leave a request on our website, and we will find the perfect solution for you!