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Simms G4 Pro™ Jacket

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Quick Overview

Simms G4 Pro™ Jacket epitomizes the next generation in rain jackets made specifically for fly fishing. 

Simms G4 Pro™ Jacket

Simms G4 Pro™ Jacket epitomizes the next generation in rain jackets made specifically for fly fishing. Arguably the highest quality, feature-packed jacket made featuring three-layer, GORE-TEX® Pro Shell fabric for the ultimate in breathability, performance and durability. Superior construction, design, and the latest high-tech breathable, waterproof fabric and materials contribute to the G4’s overall top-notch performance and lasting durability out in the elements. The Pro™ Jacket is 15% lighter and boasts an upsurge in abrasion resistance tear strength from top to bottom. 

This next generation GORE-TEX® Pro Shell is lighter and stronger due to a new woven backer fabric that slides easily over other layers while offering exceptional tear strength and internal abrasion-resistance. All six external zippers are YKK thermo-laminated, water resistant zippers made with anti-corrosion sliders that tightly seal and repel water. Two underarm zippers are included for fine-tuned ventilation. Bellowed chest pockets with hook and loops rest under a secure storm flap. New, improved adjustable storm hood offers great coverage and protection, and high-water resistant, comfortable Dry Cuff™ design keeps water out of the sleeve while tailing fish or casting in the rain.

Ample storage in 9 pockets for all your must-have fishing gear including fly-box friendly 2 bellowed chest pockets, 2 zippered chest pockets, 2 tippet pockets, sleeve pocket, internal stretch woven pocket and large back storage pocket. Jacket has patented built-in retractors, while tippet pockets feature Schoeller ® dynamic stretch fabric. Quick drying, micro-fleece lined hand warmer pockets keeps hands warm and dry, and the D ring is strategically located at the center-back neck seam.

Serious fly fishermen need the finest protection from the harshest weather conditions. Simms black or wetstone-colored Pro™ Jacket is cut to accommodate multiple layers of insulation and allow a greater range of motion for shoulders and arms. For all-day comfort and effective water seal, the Simms G4 Pro™ Jacket with Pro Shell is tough to beat.

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Most items ship within 1 business day. We ship orders from our warehouse Monday through Friday. If an in-stock order is placed on Friday evening, Saturday or Sunday, it may not ship out until the following Monday.

We rush-ship directly to customer's doors throughout the United States. Depending on the shipping method and area of the country, orders can arrive in 1-5 business days. Our policy as an organization is to successfully deliver on all orders, regardless of the chosen shipment method.


Standard GroundFREE over $504-7 Business Days
Three-DayVariable Cost3 Business Days
Two-DayVariable Cost2 Business Days
OvernightVariable Cost1 Business Day



First Class$3.00 to $5.001-5 Business Days
Priority MailVariable Cost2-3 Business Days




If you are not 100% satisfied with your order, you can return it to us for a refund or exchange within 30 days of delivery. We accept returns on all products that have not been used or registered, no questions asked. All returns are subject to a 5% re-stocking fee. To make returning an item easy, contact our friendly customer service representatives toll free 1-855-297-7000.

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