Wool Warmth for Rugged Days and Chilly Nights Simms M's Midstream Insulated Pant – Natural Insulation Meets Technical Performance From damp river mornings to crisp mountain nights, the Simms M’s Midstream Insulated Pant keeps you warm, dry, and moving freely. Featuring Lavalan® Sport 40g wool insulation, these pants harness the natural temperature regulation, moisture control, and odor resistance of wool in a lightweight, travel-ready design. Built with an abrasion-resistant nylon shell treated with a C0 DWR finish, the Midstream Insulated Pant sheds light moisture and stands up to demanding environments. Reinforced overlays on the knees and seat provide extra protection, while articulated knees and a gusseted design deliver unrestricted mobility for long days in the field or around camp. Key Features: Lavalan® Sport wool insulation – 40g warmth with exceptional breathability and odor resistance Weather protection – Durable nylon shell with C0 DWR finish repels light moisture Reinforced zones – Overlays on knees and seat for added durability Secure, adjustable fit – Integrated belt with quick-release buckle and elastic waistband Functional pockets – Two front drop-in hand pockets and two rear drop-in pockets Freedom to move – Articulated knees and gusset construction for comfort in motion Convenient zip fly for easy wear Style No.: 14237 Size Chart: Men’s Size Waist* Inseam** S 31" – 33" 30" M 33" – 35" 31" L 35" – 37" 32" XL 38" – 41" 33" 2XL 42" – 44" 34" 3XL 45" – 47" 34" * Measure around natural waist.** Inseam measured from crotch to ankle. Summary: The Simms Midstream Insulated Pant combines premium wool warmth with rugged nylon durability—ideal for cold-weather fishing, camping, and year-round adventures.
