Insulated with Eureka's "Therma Shield" insulation, Copper River 30° offers a low price point on a quality bag.  Therma Shield is a proprietary 7 hole polyester fiber fill.  Each Therma Shield strand contains 7 hollow tunnels that run the length of the strand.  These tunnels create dead air space that effectively retains body warmth. 

Constructed with a polyester mini rip-stop outer shell with taffeta inner liner.  Copper River includes double layer off-set multi-needle quilting to prevent cold spots.  The fully adjustable contoured hood and adjustable storm collar keep you snug and warm.  #5 non locking, self repairing zippers.