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What is the difference in the single valve and the dual valve?

April 26, 2017difference dual valve

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What is the difference in the single valve and the dual valve?

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The single valve will inflate all 3 rows of air chambers. The dual valve – one valve will inflate one row and the other valve will inflate the other 2 rows. The one row that is inflated separately is the row that will lie under your neck – to customize the cervical support for your neck.