The sole of the Sofia line in made with double density PU and is light-weight and comfortable. Principal technical characteristics are: an enormous resistance to  tearing, abrasion, bending, hydrolysis and hydrocarbons (quite superior to those demanded by regulatory standards); high anti-slippage and grippage properties; electrical resistance and cold/heat insulation values improved through special additives; and an improvement of its performance against chemical products.

Its carefully detailed design is especially conceived to offer maximum comfort and flexibility. For this, it has a feminine last that guarantees maximum stability and great adherence.