Proper height of the headrest and belt guides are critical for optimal performance. The headrest should rest just above the top of the child’s shoulders ensuring the shoulder belt guide is properly positioned. The child’s ears must be below the top of the ALTA’s headrest.
Once buckled, the vehicle belt must pass completely through the shoulder belt guide hook to prevent it from falling off the child’s shoulder. The vehicle lap belt must lie flat and snug across the child’s upper thighs and not across the child’s abdomen. Both the lap and shoulder belt must route under the ALTA’s armrest.
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