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G4 Pro Jacket - 2024 - Men's

4.2 out of 5 stars
5 Reviews


Size Chart


Why We Like The Simms G4 Pro Jacket - 2024

While our Simms waders keep our lower half dry in the water, the G4 Pro Jacket keeps our upper half dry in the wet weather where the fish bite best. The shell features the most durable GORE-TEX waterproofing, GORE-TEX Pro, for guide-grade protection in the toughest conditions with an adjustable storm hood and watertight cuffs to prevent water from sloshing up our arms when we dunk our hands underwater or catch and release fish. Going above and beyond your average rain shell, it also features a flip out vertical loop fly patch, tons of on-body storage pockets, and spacious rear game pockets to keep fish or stash extra layers.


  • Pro-grade shell keeps us dry when wading and fishing
  • High-denier nylon face fabric is abrasion-resistant
  • GORE-TEX membrane is waterproof, windproof, and breathable
  • DWR coating sheds light precipitation
  • YKK Aquaguard water resistant zippers for total weather protection
  • Handwarmer pockets for frigid fingers
  • Water-tight cuffs designed to avoid catching lines
  • Access rear game pockets through side handwarmer pockets
  • Item #SMMF0L9
Waterproof Rating
fully sealed
2 zippered chest, 2 handwarmer, 1 zippered sleeve, rear game
Claimed Weight
1lb 8.7oz
fly fishing
Manufacturer Warranty
1 year

Overall Rating

4 based on 5 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 3 reviews

What do you think about this product?


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5 out of 5 stars

May 21, 2024

Monsoon proof

After cheaping out on numerous other un insulated rain jackets that leaked after a hard rain I finally bought the G4 Pro. I’m several monsoons in with this coat and zero leaks. Plus it’s comfortable and loaded with great pockets and features. Thank you Simms!


Originally reviewed on

5 out of 5 stars

May 11, 2024

Wore it today on the Delaware in a full on rain. Impervious! And warm! Sr


Originally reviewed on

5 out of 5 stars

May 8, 2024

Solid well designed jacket - a definite improvement

I have only worn a few times but last time it was raining hard and gusting over 40. The jacket kept me completely dry. Very nice wrist closures, clever storage spaces inside the pockets. The pass through pockets are very hand for accessing layers under the shell. Looks great and easily passes as an everyday rain shell. May run a tad large


Originally reviewed on

4 out of 5 stars

April 17, 2024

G4 jacket

I like almost everything about this jacket EXCEPT the stupid orange coloration on the hood.


Originally reviewed on

2 out of 5 stars

January 28, 2024

Arms are tight, less casting mobility

I own the previous version of this jacket in the same size and was stoked to see an improvement over the super tight collar that wouldn't allow for hooded layering when fully zipped. This open hood version fits much better in that regard and allows for greater comfort and protection around the neck and chin when fully zipped up with or without hooded layers. The pass-through zippers which double as vents are great, but I wish they would have stuck with the huge back pocket access like in the previous version which greatly increased the carrying capacity of the jacket and would allow you to shift the bulk off the front of your body which helps with spey casting, etc. The cuffs on the previous version were IMO the best snag-free cuffs ever! The Velcro tabs on the new cuffs snag loops and don't tighten nearly as much as the previous version. The biggest issue I had is with the cut of the arms- they are shorter and narrower towards the wrist than the previous version which greatly restricts casting mobility and layering. The rest of the jacket fits great! I'm returning the new one mainly because of the mobility issue in the arms and would encourage folks to pick up the previous one at a discount while it lasts until Simms dials the next one in a bit better.


Originally reviewed on