A form of bondage, that completely restraints the subject, to where they are unable to move, in the slightest degree.
The complete restraint of an individual, is also part of creating a deep mental feeling of total helplessness.
Mummification is considered the most popular extreme of this practice, however there are other methods, involving the intricate use of leather, rope, and other binding materials.
A form of trust, but one that should not be carried out over any lengthy time period.
Such restraints, can lead to circulation issues, and should be carefully monitored.
In addition, such immobilization, that is so total, can lead to severe body stress, in a physical way.