Simms' RiverTek Heavyweight Zip Top is ideal as a standalone pull-over or as a layering piece underneath a wading jacket for those blustry winter steelheading days when extra warmth is desired. The heavyweight RiverTek zip top features a Polartec Power Dry fleece construction with a non-pilling exterior, a four-way stretch design and an anti-odor bacteria resistant fabric treatment for maximum performance and comfort.

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