IRH F1 Quilted Replacement Liner - 6 5/8 (8mm thick) / Black (F1 Replacement Liner) is backordered and will ship as soon as it is back in stock.
The F1 Regular & Wide Brim Moisture Wicking liner has a hook & loop attachment system.8 different liners in 4 thicknesses are available to provide a custom fit.
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