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$199.95  $199.95



If you need to stay warm, choose PrimaLoft pants for your midlayer or outerlayer

The ExStream Pant maximizes your body’s ability to maintain warmth via PrimaLoft® Silver Hi Loft insulation. ExStreams can be worn as a midlayer under waders when fishing calls for dredging deep, or harness the powers of great fit and Polyester diamond weave face fabric for best-in-class outerlayer attributes. The YKK® zip-fly fights corrosion, while easy-access hand warmer pockets with a soft, brushed tricot lining, offer a safe haven in freezing weather.

Features of the ExStream Pants:

  • PrimaLoft® Silver - High Loft insulation retains 85% of its warmth when wet and delivers maximum insulation on the coldest days
  • High loft insulation delivers a great fit under waders or as an outer layer
  • YKK® coil corrosion-resistant zip fly
  • Drop-in style hand warmer pockets with soft, brushed tricot lining and a single cargo pocket with Velcro closure
  • Fabric Tech: 100% Polyester diamond weave face fabric with Primaloft Silver - High Loft insulation - 100 g
  • Approx Weight: 18.5 oz. / 525 g
  • Sizes: S/20, M/30, L/40, XL/50, XXL/60

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  • Customers reviews

    PrimaLoft® SYNERGY, is an advanced multi-denier continuous filament insulation engineered for superior warmth, softness and loft. PrimaLoft® SYNERGY is constructed of both fine and ultra fine denier continuous filament fibers. This fiber composition results in an insulation that raises the performance bar of continuous filament insulations.Fine and ultra-fine fibers form tiny air pockets that trap body heat and keep the cold out. These fine and ultra-fine fibers are engineered for permanent water resistance and create tight surface tension that resists moisture penetration. The ultra-fine continuous filament fibers allow PrimaLoft® SYNERGY to be softer and more compressible.

    Little Parts from the YKK® Fastening Products Group create The Big Difference — fastening solutions intelligently integrated with the finished product to provide the highest quality, most durable gear. The Little Parts — zippers, metal buttons and snaps, and Nylon buckles — all earn the YKK® brand. The Big Difference begins with their obsession to ensure that every individual component renders maximum value to the finished whole. That commitment instills quality and value into every product. Simms utilizes fasteners built to withstand the harshest environments and YKK® provides the best solutions to meet those needs. All Simms outerwear features nylon YKK® zippers to minimize corrosion and provide high performing, durable wear. YKKAmerica.com

  • Reviews

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    Simms exstream pants

    I wore these pants under my waders on a recent B.C. steelhead trip. They kept me very warm better than anything else I have used in past. Only complaint is that the snap on the pants broke on the very first day. I called Stillwater fly shop,told them what happened and they replaced them with a new pair ,great customer service.

    Tom Toretta



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