The 3D knitted fabric provides very good air permeability and minimal absorption of moisture and water. The smooth layer is directed toward the cotton fabric, while the openwork is in contact with the foot. The structure of the spacer knitted fabric, which consists of two different outer layers (smooth and openwork) connected by a monofilament layer also contributes to the increased physiological and hygienic comfort ( Figure 3). The adopted material design ensures an appropriate microclimate inside the footwear. The moisture appearing inside the footwear is transferred to the next sorption layer with hydrophilic properties, made of cotton knitted fabric, which is excluded from direct contact with the user’s skin. According to this canon, a polyester spacer knitted fabric with hydrophobic properties (i.e., low moisture absorption rate), constitutes the footwear lining, that is, the conductive diffusion layer adjacent directly to the body.

In the design of footwear, it was decided to use a multi-layer system of materials by combining synthetic and natural materials, following the canon of construction of a two-layer knit with increased biophysical values.

Zw3d 2021