Nuna Sena mini Mode D'emploi page 10

Never add a mattress, pillow, comforter, or padding. Use
ONLY mattress/pad provided by Nuna. Using a thicker or a
different sized mattress/pad may allow a child's head to get
between mattress/pad and side of the play yard causing
suffocation.
! Never use plastic shipping bags or other plastic film as
mattress covers not sold and intended for that purpose.
They can cause suffocation.
! Never use a water mattress with this product
Strangulation Hazards
! Strings and cords can cause strangulation. Keep strings
and cords away from child.
! NEVER place the product near a window where cords from
blinds or drapes can strangle a child.
! NEVER hang strings on or over the product.
! NEVER place items with a string around a child's neck,
such as hood strings, pacifier cords, etc.
! NEVER attach strings to toys.
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