See also:

Maximum Gross Vehicle Weight (GVW)/Maximum Gross Axle Weight (GAW)
The GVW of the towing vehicle must not exceed the Gross Vehicle Weight Rating (GVWR) shown on the F.M.V.S.S./C.M.V.S.S. certification label. The GVW equals the combined weight of the unloaded ve ...

Seat belt extenders
If, because of body size or driving position, it is not possible to properly fit the lap/shoulder belt and fasten it, an extender is available which is compatible with the installed seat belts. ...

Install
1. Align the head restraint stalks with the holes in the seat. Make sure the head restraint is facing the correct direction. 2. Push and hold the lock knob and push the head restraint down. 3. ...