Simms M's Midstream Vest

Streamlined Warmth with Natural Performance

Simms M's Midstream Vest – Lightweight, Wool-Insulated Versatility

When crisp mornings and cool afternoons set in, the Simms M’s Midstream Vest delivers just the right amount of warmth without the bulk. Powered by Lavalan® Sport 60g wool insulation, it harnesses the natural temperature regulation, moisture management, and odor resistance of wool—making it an ideal choice for extended fishing trips, backcountry adventures, and everyday wear.

With its abrasion-resistant nylon shell and C0 DWR water-resistant finish, this vest stands up to damp conditions while keeping your core warm. Lightweight and packable, it stows into its own interior mesh dump pocket for easy carry when the sun comes out. Whether layered over a flannel or under a shell, the Midstream Vest is built for comfort, function, and mobility.

Key Features:

• Lavalan® Sport 60g wool insulation – Superior warmth with natural breathability and odor resistance

• Weather protection – Abrasion-resistant nylon with C0 DWR finish sheds light moisture

• Smart storage – YKK conceal-zippered chest pocket, two hand pockets, and interior mesh dump pocket

• Packable design – Vest stows neatly into its own interior pocket

• Adjustable fit – Drawcord hem seals in warmth

• Versatile layering piece – Perfect midweight for on-water, in-camp, or in-town wear

Style No.: 14043

Summary:

The Simms Midstream Vest blends lightweight Lavalan wool insulation with a rugged, water-resistant shell—delivering packable warmth for fishing, travel, and outdoor life.