Simms Strata Layering System – Built for Any Condition From brisk mornings to brutal storms, the Simms Strata layering bottoms keep you warm, dry, and fishing longer. Available in lightweight (160), midweight (200), and storm-ready (330), each layer is purpose-built for a specific role in your cold-weather kit. Simms M’s Strata 160 Bottom – Lightweight First Layer Your First Line of Warmth When temps drop but mobility matters most, the Simms Strata 160 Bottom delivers. Its wool-blend stretch knit regulates temperature, wicks moisture, and fights odor, making it the perfect next-to-skin base layer for active days on the water. Key Features: 92% Polyester, 8% Wool stretch knit Gusset & Back Yoke: 92% Polyester, 8% Elastane Stretch Jacquard Mesh 4-way stretch for unrestricted movement Wicking and quick-dry finish Anti-microbial treatment to prevent odor Low-profile flatlock stitched seams for comfort Comfortable elastic waistband Style No. 14227 Summary: The Strata 160 is your lightweight, breathable, and odor-resistant base layer—ideal for layering under waders during cool mornings or early-season trips. Simms M’s Strata 200 Bottom – Midweight Performance Layer Warmth That Works as Hard as You Do When cold weather threatens to cut the day short, the Simms Strata 200 Bottom steps up. Channeled fleece traps warmth and pulls moisture away, while its stretch construction keeps you moving comfortably. Key Features: Main: 96% Polyester, 4% Elastane stretch knit Gusset & Back Yoke: 92% Polyester, 8% Wool stretch knit Channeled fleece for warmth and moisture management 4-way stretch for active movement Internal drawcord waistband adjustment Two drop-in hand pockets Wicking and quick-dry finish Anti-microbial odor control treatment Style No. 14229 Summary: The Strata 200 is your midweight insulating layer, offering warmth, stretch, and moisture control—perfect for late fall through early spring fishing. Simms M’s Strata 330 Bottom – Storm-Ready Outer Layer Built for the Harshest Conditions When wind and rain join the cold, the Simms Strata 330 Bottom delivers maximum protection. Stormfleece Pro technology merges a durable woven shell with a warm fleece interior for the ultimate weather defense. Key Features: 92% Recycled Polyester, 8% Spandex 4-way stretch woven with C0 DWR finish Stormfleece Pro combines durability, warmth, and breathability Dual snap closure with internal drawcord elastic waistband YKK zip-fly construction Two YKK Conceal zippered hand pockets & two drop-in rear pockets Low-profile cuffs and stirrups for smooth layering under waders or bibs Style No. 14233 Summary: The Strata 330 is your outer defense against wind, light rain, and cold—ideal for harsh weather fishing or as a standalone cold-weather pant.