Alias · Back Position
Over-under grip
Also known as Seatbelt Control — the canonical term used on this site.
Training background: descriptive — named for the arm configuration: one arm over, one under
Descriptive — one arm over the shoulder, one under the armpit
Over-under grip is a descriptive name for the seatbelt control — the back-position arm configuration in which one of the attacker’s arms passes over the opponent’s shoulder while the other passes under the opposite armpit, with the hands meeting on the chest.
Etymology. “Over-under” is the geometric description of the arm configuration: one over (the choke-side shoulder) and one under (the opposite armpit). The term is used interchangeably with “seatbelt” — itself a metaphor for how the configuration secures the attacker to the opponent’s back the way a car’s diagonal seatbelt secures a passenger. “Over-under grip” is the precise descriptive label; “seatbelt” is the metaphor that stuck. Both terms appear in instructional vocabulary; the descriptive label is more common in wrestling-adjacent contexts and the metaphor in BJJ.
Mechanics. The connection between attacker and opponent’s torso is what makes the seatbelt the prerequisite for back-position control — without the closed arm loop, the attacker cannot transfer weight to the back or generate the chest pressure needed to threaten the strangle.
Cross-reference. “Seatbelt grip” is the same configuration under the metaphorical name. Full mechanical coverage on Seatbelt Control.