ExStream™ Pant

ITEM # PG-10779


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ExStream Pant - Dark Gunmetal

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  • ExStream Pant - Dark Gunmetal
  • ExStream Pant - Dark Gunmetal - Back


Pants built for one purpose: warmth
Simms’ angler-driven ExStream Pant beats merciless conditions into submission by maximizing 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 for digits in need of defrosting.


  • 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 – 100g
APPROX. WEIGHT: : 18.5 oz /525g



Size Chart

Men's Outerwear Bottom Size Chart

Men's SizesWaist*Inseam**
S 29" - 31" 30"
M 32" - 34" 31"
L 35" - 37" 32"
XL 38" - 41" 33"
XXL 42" - 44" 33"

* This is a body measurement

** This is a garment measurement - inseam measured from crotch to ankle


ExStream™ Jacket and Pant Video

Product Care

Primaloft® Care:

Machine wash and rinse in cold water, gentle cycle.Tumble dry low, remove promptly. Do not dry clean, bleach, iron or steam.

To maintain loft do not store compacted. Primaloft® is easy to care for especially when compared to down.



  • Little Parts from the YKK® Fastening Products Group create The Big Difference for our customers — 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. www.ykkamerica.com.

  • Primaloft® Silver maintains 85% of its warmth when wet and delivers maximum insulation on the coldest days.


Customer Reviews

3 Review(s)

2 Item(s)

GREAT WARMTH Review by 635splash
The pants is a little bulky but worth having them. I was in 30 degrees of wading water in December and it was worth its weight in gold. So happy with them, I had to and I brought the exstream jacket too. Great combo and you'll never need anything else with your layers except for a outer shell of gor-tex rain gear. Worth the money. Actually you would pay a lot of money when you are standing in the cold river and the steelheads are here and you are too cold to wade in the water. Don't wish for them get it now.

(Posted on 6/16/15)

Sizing info Review by Erin M
These pants fit awesome an very flexible when bending down an up.
I bought a size Large an they fit perfect.
I'm 5'10" 210lbs 36in waist length 30
Athletic fit

(Posted on 12/13/14)

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