Seat belts
The seat belts can be cleaned by wiping them with a sponge dampened in a mild soap solution. Allow the belts to dry completely in the shade before using them.
See “Seat belts” in the “1. Safety — Seats, seat belts and supplemental restraint system” section.

Do not allow wet seat belts to roll up in the retractor. NEVER use bleach, dye, or chemical solvents to clean the seat belts, since these materials may severely weaken the seat belt webbing.
See also:
Comfort Levels
I remember finding our 2009 Cube 1.8 S' driver's seat rather uncomfortable.
The 2010's seemed better, though it doesn't appear to be different, aside from
the fabric. Another editor, who took the ...
Air bags, seat belts and child restraints
1. Top tether strap anchor (P. 1-26)
2. Rear seat belts (P. 1-13)
3. Roof-mounted curtain side-impact
supplemental air bag (P. 1-41)
4. Front seat-mounted side-impact
supplemental air bag (P. 1 ...
Infants
Infants up to at least 1 year old should be placed
in a rear-facing child restraint. NISSAN recommends
that infants be placed in child restraints
that comply with Federal Motor Vehicle Safety
Stan ...
