Seat belt and hooks

Position and problem

You have arrived behind the opponent. One arm is over a shoulder, the other under the opposite armpit, hands joined in front of their chest — the seat belt, also commonly called the harness. Your legs are somewhere around their hips. The back is the position everything else is trying to reach, and it is also the position most often lost by accident, usually while the person holding it is busy hunting a strangle and has stopped noticing that their chest has come away from their opponent's back.

Objective

Stay attached chest-to-back through the opponent's turning, so that attacks remain available rather than being raced against the clock.

Core concept

The seat belt is what keeps you behind them; the legs are what keep them from running forward. Most people learn this in the opposite order and then spend a long time losing the back to opponents who simply peel a hook and sit down. The reason chest connection ranks first is geometry: the opponent escapes by rotating their shoulders toward you and getting their back to the mat, and that rotation is fought at the shoulder line, not at the hip. If your chest is glued to their upper back with the over-shoulder arm deep and the under-arm elbow tight, they can move their hips a long way without ever changing which way they are facing. There is a genuine, unresolved preference question about the legs: two hooks are more mobile and give up less if the opponent stands, while a body triangle is harder to strip and restricts them more but commits both of your legs to one side and can be turned into. Both are standard, and which you should use depends on limb length and on what you are trying to do next.

Key mechanics

1. 01Keep the chest on their upper back and the shoulder line, not on the middle of their back. The higher the connection, the less rotation is available to them.
2. 02Drive the over-shoulder arm deep enough that your armpit is on their shoulder, and keep the under-arm elbow pinched to your own ribs so it cannot be peeled outward.
3. 03Follow them to the mat on the side of your under-arm shoulder. If they turn toward your over-shoulder side, you end up under them; if they turn toward the under-arm side, you end up on top of their back.
4. 04Treat the hooks as directional, not symmetric. The bottom hook stops them sitting down toward the mat; the top hook stops them turning into you. When one is under attack, that tells you which escape is coming.
5. 05Never cross the ankles in front of their body. Crossed ankles are both a weaker structure and an invitation to a foot lock.
6. 06Recover the seat belt before you recover the legs. Losing both hooks with the harness intact is a recoverable position; losing the harness with both hooks in is usually the start of an escape.

Common errors

• ×Prioritising the hooks and letting the chest drift away from their back, so the opponent can turn freely while you are still technically attached.
• ×Letting the under-arm elbow flare away from your ribs, which gives them the handle they need to peel the arm and start turning.
• ×Falling to the over-shoulder side, which lands you underneath them with the position half gone.
• ×Crossing the ankles in front of the opponent's hips.
• ×Chasing the strangle with both hands and holding the position with nothing, then wondering where the back went.

Safety

The body triangle is the specific safety item on this position. Locked around the midsection and squeezed, it compresses the ribs and abdomen and can become uncomfortable well past the point of being a control — some people tap to it as a submission, and that tap deserves the same immediate release any other tap does. Do not squeeze a body triangle to make a stalled position feel productive. The second item is smaller but common: an ankle crossed in front of an opponent's body is exposed to a foot lock from a defender who is not even trying to escape, and it is a needless way to end a training round.

Training progression

1. 01Static: partner sits still, you set the seat belt and both hooks and simply hold it. Then remove the hooks and notice how much control the harness alone still gives you.
2. 02Cooperative: partner turns slowly, one direction per repetition, and you practise following to the correct side each time without attacking.
3. 03Constrained game: partner escapes at moderate resistance, you may not attack any submission — only retain. Restart when they face you or when they get their back to the mat.
4. 04Leg-configuration drill: alternate rounds between two hooks and a body triangle so you learn the difference in what each one costs you against a standing or a rolling escape.
5. 05Positional sparring: full resistance from the back, submissions allowed, restart on escape or finish.
6. 06Live rounds: when you lose the back, identify whether the harness or the legs went first. In most rounds it is the harness, even when it felt like a hook.

Related entries

• Blood choke versus air choke
• The arm drag
• Inside position