The person's wrists are tied crossed behind them. Their ankles are tied crossed as they sit on the floor; this forces their shins to be at right angles to each other with the knees wide apart. A dog collar or other leather collar is fastened around their neck. A rope is tied to the front of the collar and goes to the ankle ties. The rope is pulled tight, which forces the ankles as close to the neck as possible. Next, the left upper arm is tied to the left thigh, just above the knee. Finally, the same is done with the right arm and leg. The person is now folded double.
Mr Savage claims that most people tied like this cannot move themselves from the sitting position and that on the whole, this position limits movement more than a standard hogtie.
A further refinement is to tie a rope round the elbows to pull them towards each other. While they cannot move very far (due to the ties to the legs), this extra rope further immobilises the arms.
This article incorporates text from the article on Savage fold in Wipipedia, the free-content Fetish and BDSM encyclopedia.