Glossary /// Alias
Seatbelt triangle escape
Also known as Back Triangle Escape — the canonical term used on this site.
Descriptive — triangle built from seatbelt back control
Seatbelt triangle escape names the back triangle by the control it grows out of, marking it as a submission that arrives from an established seatbelt rather than from a scramble.
Etymology. “Seatbelt” is the standard no-gi term for the over-under upper-body control of back position. Attaching it to the triangle tells a defender where to expect the attack — and, more usefully, that the back defence and the triangle defence are the same fight at different stages.
Mechanics. Because the strangle needs bilateral carotid compression and the shoulder is in the way, arm position governs the outcome. Defending the seatbelt properly keeps the arm where the triangle cannot form; once it has, extraction during the leg swap is the answer, and stacking is the survival option.
Cross-reference. “Arm-in rear triangle escape” is the descriptive name. Full escape coverage on Back Triangle Escape.