A 
rear-facing  infant  restraint 
(B) 
positions  an  infant 
to face the  rear 
of 
the  vehicle.  Rear-facing  infant 
restraints are  designed for infants of up to  about 
20 
lbs. 
(9 
kg) 
and  about one year 
of 
age. 
This 
type 
of restraint faces the rear 
so 
that  the  infant’s  head, 
neck  and  body  can  have  the  support  they  need in a 
crash.  Some infant seats come  in  two parts 
-- 
the 
base  stays  secured 
in 
the  vehicle  and  the seat part 
is 
removable. 
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