Better than a regular button-down or a thrift store flannel, the Burton Flynn Insulated Shirt builds in core riding warmth with DRYRIDE Thermex™ insulation and repels everyday elements with a water/oil/soil-resistant finish. The cotton shell fabric keeps it comfortably simple and a DRYRIDE Ultrawick™ lining prevents the interior from getting sweaty, cold, and clammy. An additional wrinkle-free finish is a bonus, not that you'd iron it anyways. DRYRIDE Ultrawick™ Polyester/Cotton Chambray Lining. DRYRIDE Thermex™ Polyester Insulation. Patch-On Chest Pockets. Button-Up Center Front.