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The Classic Vest uses patented AERIS 500 (½” / 13mm of loft), a revolutionary patented insulation Technology that keeps you warm, even if it gets wet!
The Classic – has changed the way workers and survivalists approach the cold.
As a mid or light outer layer garment, the Classic Vest is built using a Polyester Mesh lining that helps pull moisture and sweat away from the body. The outer fabric is a wind resistant Polyester Micro Rip-Stop Taffeta with a DWR (Durable Water Repellent) finish which repels light rain and snow and decreases dry times.

The Classic Vest is designed to be worn over your choice of a synthetic thin layer under-garment, with a light, single layer shell over top OR with a thick base layer without an outer shell focused on keeping your core warm
We suggest that you do not wear 100% natural fiber underneath the Vest if going to be highly active, as natural fibers will absorb and retain moisture, which degrades the performance of the AERIS Insulation.