Back

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  Butterfly Suspension Back
  By merging a fabric layer with polymer veins, the flexible Butterfly Back conforms to your shape like a suspension membrane, supporting you as you move while allowing airflow to keep you cool.
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  TriFlex 2 Polymer Back
  The TriFlex Back is made of a durable polymer material, with perforations carefully arranged so the back flexes with you and allows maximum breathability and easy cleaning.