G4 Pro™ Jacket



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G4 Pro Jacket - Gunmetal


Guides Day Off is just another day on around these parts. It means time to prototype new patterns and techniques, and to source and mark beasts for future reference. Because working-class anglers rarely get a breather, Simms built its don’t-quit jacket for the extreme weather grind. The stormproof G4 Pro™ is cutting-edge equipped to keep you dry, warm, and comfortable via 3-layer GORE -TEX® Pro Shell fabric, and it features an intuitive array of fishing-first elements at your finger tips. Jackets are kitted with 7 storage pockets; 2 bellowed chest pockets, 2 zippered chest pockets, 2 zippered tippet pockets and 1 large back pocket. Quick drying microfleece-lined hand warmer keep your digits frost-free in subzero temps, while water-resistant pit zips allow you to air out the funk when the fishing heats up. Simms G4 PRO™. Expert abused. Angling-addict approved.


  • Full-length YKK® VT9 AquaGuard® VISLON® water-resistant center-front zipper with zipper flap for additional protection
  • Heavier nylon fabric in shoulders for additional durability and lighter nylon fabric in body for enhanced packability
  • Seven storage pockets including two bellowed chest pockets, two zippered chest pockets, two zippered Tippet pockets and one large capacity back pocket
  • Quick-drying, microfleece-lined hand warmer pockets with zipper closure
  • The only Simms rain jacket featuring water-resistant pit zips
  • Adjustable storm hood, adjustable cuffs and adjustable shock cord hem
  • Two patented built-in retractors
  • 3-layer GORE-TEX® Pro Shell fabric; 100% Nylon face
  • Approximate weight: 33 oz
Simms G4 Pro Fishing Jacket


Size Chart

Men's Outerwear Top Size Chart

Men's Sizes Chest* Neck*Sleeve*
S 36" - 38" 14.5" - 15" 33" - 34"
M 39" - 41" 15.5" - 16" 34" - 35"
L 42" - 45" 16.5" - 17" 35" - 36"
XL 46" - 48" 17.5" - 18" 36" - 37"
XXL 49" - 51" 18.5" - 19" 37" - 38"

* These are body measurements


G4 Pro™ Jacket

Why Outerwear?

GORE-TEX® Technology and Simms Gear

Product Care

GORE-TEX® Outerwear Care:

Cleaning your GORE-TEX® garments regularly will extend the life of the product. It will also keep them breathable as dirt and oil can clog the GORE-TEX® membrane over time.

It is critical to wash jackets. Natural oils can damage the GORE-TEX® tape and adhesives causing a peeling effect.

Machine wash warm. Do not use fabric softener or bleach.

Remember to zip all pockets and close all Velcro cuffs before washing to prevent any damage caused by the machine.

Tumble dry on warm setting making sure not to use a high heat setting. Drying on warm will actually reactivate the DWR coating.



  • GORE-TEX® PRO SHELL outerwear is waterproof, exceptionally lightweight and offers the ultimate in breathability, durability and extended comfort. Constructed with a woven backer, GORE-TEX® Pro Shell garments slide easily over other layers and offer exceptional tear strength and internal abrasion-resistance.

  • The AquaGuard® VISLON® zipper is a revolutionary new design from the global leader in containment closures. The AquaGuard® VISLON® zipper's new tooth design provides enhanced fluid repellency vs. coil or standard individual element closures, while increasing the number of design and color options for your application.


Customer Reviews

28 Review(s)

Items 21 to 28 of 28 total

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Always reliable Review by Ak Floater
The G4 Pro has become essential equipment and I don't go fishing in Ak without it. We deal with adverse weather conditions frequently. The confidence that is inspired by this piece of equipment more than justifies the investment. The only downside is not having the jacket on when the skies are clear and the temperatures are high. A packable pouch would be handy. I wish the jacket was 2 inches longer. If anything ever happens to this jacket, there will be another on the way as soon as I have cell reception.

(Posted on 7/16/12)

G4pro Review by Terry B.
Great,comfortable jacket,Good fit and well designed in terms of pocket accessibility. I have to say I struggle with the current cuff design and because of my big hands I have to released the cuff everytime I take the jacket off... Rain and weather are non-factors when wearing this jacket.Kept dry in all conditions..

(Posted on 7/16/12)

Well worth the money Review by Hugh
This is my first try at the Simms G4 wading material and have to say it is well worth the extra money. The G3 fabric is great but the G4 material is in a class of it's own. The fabric is super light, extremely breathable, windproof and thus far, very durable. The extra pockets are well designed. Pairing this jacket with a dry creek waist pack, a long day fishing in damp and cold weather for steelhead become a much more enjoyable expierence. Open up the arm pit zips and this jacket functions well as a mild weather, windproof rain jacket. Haven't had a problem with the cuffs leaking as long as you bind them down properly.

(Posted on 7/16/12)

G4 Pro Jacket Review by M. Tyree
This jacket is great. It is quite durable and absolutely waterproof. I work in and around water all day and have worn this jacket for countless hours. The vents on this jacket make it comfortable to wear during long hikes and humid days. One negative I have on this jacket is the cuff as I do get water seepage when my hands are submerged.

(Posted on 7/16/12)

Great Jacket Review by wvotter
The G4 is a fantastic jacket. It has become a standard piece of weather armor whenever we go out. The waterproof main zipper is great especially when sitting in the drift boat in the pouring rain chasing muskies. The only negative issue with this jacket is the cuffs do not seal very well. If they had the stretchy neoprene like the new Pro Dry jacket does the G4 would be perfect. All in all a great jacket never leave the house without it.

(Posted on 7/16/12)

Worth the money Review by FlyGyd
You are getting all that you are paying for. I put this jacket in the bullet proof survival gear category with everyday practicality. There is always a good chance that I might get stuck for several nights in the wilderness. I pick my gear with that in mind. I could go through a list of the features and benefits but you can read those in the description. Its as good as Simms says it is and I bet my life on it.

(Posted on 7/16/12)

Best Bang For Your Buck Review by Dutchie
spent many many days during the summer in this jacket while guiding , just fished hard for 8 days in solid rain for steelhead and was very pleased with this jacket , 100% water proof and she has all the bells and whistles you'd ever want in a tough jacket , you can't go wrong with buying this G4 Pro Jacket , when cold i will add a couple shake em hand warmers in the morning into each pocket , keeps the fingers warm while swinging for fish

(Posted on 7/16/12)

Great rain jacket Review by Paul
Just a great rain jacket, there is nothing negative to say.

(Posted on 7/16/12)

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