Invacare TDX SP User Manual page 167

CAUTION: Injury hazard during use of the mobility aid as a
vehicle seat if a headrest is wrongly adjusted or not
installed! This can cause the neck to be hyperextended
during collisions!
• A headrest must be installed! The headrest optionally
supplied for this mobility device by Invacare® is perfectly
suitable for use during transport.
• The headrest must be adjusted to the user's ear height.
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