Comfort
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Possibility of Device Causing Injury
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Ease of Driving
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Side Protection
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Recline Angle adjustable
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Availability of Different Sizes
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Size Adjustable
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Appearance
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Weight
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Cost
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Reputation of OEM
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Other's opinions
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Data from sled tests
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Ease of Use and Attachment
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Ease of Egress in an Emergency
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SFI Approval
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FIA Approval
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