This is what you are looking for: Valgu-correct

Hallux, or rather lopsided deformation of the thumb of the foot, is a condition in which there is damage to the joint of the thumb of the foot. As a result, the latter deforms to the side, which deviates from the center line of the body. This disease makes daily functioning very difficult because in the developed phase it is very painful to walk normally, not to mention more complex activities. The reason for the formation of halluxes is mainly inadequate footwear, but they can also be the consequences of rheumatic diseases, halluxes can develop in parallel with other degenerations, e.g. with arthritis, they can also be caused by anatomical and genetic conditions. That is why a flexible insert called Valgu-correct was created, which holds the finger in the right position and eliminates the defect over time. It is completely safe for our health, we do not have to worry about side effects, because they do not occur.