Why is layering important for fly fishing?

Layering keeps you warm, dry, and comfortable by combining moisture-wicking, insulating, and weatherproof layers.

What types of layering clothing do you sell?

We offer base layers, fleece, insulated jackets, and soft shells for warmth and mobility in any season.

What materials are best for thermal and layering clothing?

Merino wool, polyester, and fleece fabrics wick moisture, insulate effectively, and dry quickly.

Which thermal clothing brands do you carry?

Drift Outfitters carries Simms and Patagonia — trusted for warmth and technical performance.

How do I layer for cold-weather fishing?

Combine a wicking base layer, insulating mid-layer, and waterproof shell for warmth and comfort.

How should I care for my thermal clothing?

Wash in cold water, skip softeners, and air-dry to preserve insulation and moisture-wicking properties.

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 Bottom

$84.97

$84.97 ~~$118.95~~

Sale

Sold out

Low stock - 1 item left
Inventory on the way

Color: Raven

Raven

Size: XXL

XXL

Product variants

Quantity

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

Refund available within 30 days, exchange until 90 days.

Price Matching Available

Product Description

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

Simms – ExStream Core Bottom – Clearance – Cold-weather warmth built for layering.

The Simms ExStream Core Bottom is designed to keep anglers warm and comfortable during frigid fall and winter sessions. Featuring a two-layer weave that traps heat close to the body, these bottoms provide reliable insulation without bulk. The tapered fit layers smoothly under waders, while ankle cuffs ensure seamless integration with boots for all-day comfort. Built for early mornings and cold conditions, the ExStream Core Bottom is an essential baselayer for those who refuse to let weather cut their day short. Now available at a special clearance price. Shop online or visit Drift Outfitters in Toronto for expert advice and fast shipping across Canada.