The invention relates to a sock which has two layers of constant diameter along its entire length in the lower zone. The outermost layer has a longitudinal groove at the level of the subdigital area of the fingers that allows introducing a custom silicone polymer structure of different thicknesses 2 mm, 4 mm, 6 mm. In this way, you can insert the custom silicone orthosis, according to the real need you have in daily activities, in order to replace the plantar fat, alleviate the pain or pressures that make the feet when walking or staying standing time. (Machine-translation by Google Translate, not legally binding)