The seamless design means there are no chunky toes, making them recommended for leather shoes or tight-fitting shoes.

In addition to its flexible horizontal stretch, the vertical stretch has been processed to make it less stretchable in some areas, thereby improving the anti-slip adhesive properties.
The three-dimensional structure of the toe area, which is prone to stiffening, reduces stress. 
The heel is deeper and the opening is seamless, making the shoes gentle against the skin.