What makes Simms fly fishing gear stand out?

Simms builds durable, high-performance waders, boots, and outerwear trusted by anglers worldwide.

Where is Simms gear made?

Premium models like the G3 Guide and G4Z waders are made in Bozeman, Montana, USA.

Are Simms waders waterproof and breathable?

Yes. Simms uses GORE-TEX® and advanced fabrics for waterproof, breathable comfort.

Where can I buy Simms gear in Canada?

At Drift Outfitters & Fly Shop in Toronto or online with fast Canada-wide shipping.

Simms - ExStream Core Top

$104.97

$104.97 ~~$209.95~~

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Low stock - 2 items left
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Size: Small

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Free Shipping for orders $200+ (Excludes oversize and consignment items)

Refund available within 30 days, exchange until 90 days.

Product Description

Items purchased while on clearance are not eligible for returns, refund, or store credit.

Simms – ExStream Core Top – Built for cold-weather angling.

The Simms ExStream Core Top is designed to keep you warm during frigid mornings and late-season fishing missions. Featuring a 2-layer weave that traps body heat, this technical top offers excellent insulation without restricting movement. Its athletic cut ensures a full range of motion for casting, while thumbhole cuffs keep sleeves securely in place when layering or reaching. An integrated hood and built-in neck gaiter provide extra protection against biting winds and cold spray, making it an all-in-one piece for harsh conditions. Finished with flatlock seams for long-lasting comfort and durability, the ExStream Core Top is built to help anglers push through the coldest days on the water. Shop Drift Outfitters online or in-store in Toronto for expert advice and fast shipping across Canada.

2-layer Toray body fabric
100% polyester mesh
Ergonomic hood and integrated neck gaiter
Anti-fog mesh built into gaiter
Articulated sleeves with thumbholes
Flatlock seams

Thermal & Layering FAQ

Q: Why is layering important for fly fishing?
A: Layering helps you stay comfortable and adaptable in changing weather conditions. By combining moisture-wicking base layers, insulating mid-layers, and protective outer layers, you can regulate temperature, stay dry, and fish comfortably in any season — from chilly steelhead mornings to cool alpine streams.

Q: What types of layering clothing do you sell?
A: Drift Outfitters carries a complete range of thermal and layering pieces including base layers, fleece, insulated jackets, and soft shells. These garments are designed to keep you warm and dry without restricting movement, making them perfect for fishing and outdoor adventures year-round.

Q: What materials are best for thermal and layering clothing?
A: The best layering materials include merino wool, polyester blends, and technical fleece. These fabrics wick moisture, dry quickly, and provide warmth even when wet — unlike cotton, which retains water and can cause heat loss in cold conditions.

Q: Which thermal clothing brands do you carry?
A: Drift Outfitters carries trusted performance brands like Simms, Patagonia, and Hooké. These brands are known for their high-quality technical fabrics, comfort, and durability in demanding fishing and outdoor environments.

Q: How do I layer clothing for cold-weather fishing?
A: Start with a moisture-wicking base layer, add an insulating fleece or mid-layer, and top it off with a waterproof or windproof shell. Proper layering traps heat and manages moisture, keeping you warm without overheating.

Q: How should I care for my thermal and layering clothing?
A: Wash according to manufacturer directions. Air-dry or tumble on low heat to maintain performance and prevent shrinkage. Always follow brand-specific care labels for best results.