Men's Simms Thermal Midlayer Bottom Fly Fishing Pants Size - Large Color - Grey Great Condition Simms warmest midlayer for cold days, the M's Thermal Pants feature a grid-fleece interior that traps heat next to skin, without adding bulk or limiting range of motion. 🎣Smooth faced grid-fleece layers perfectly with our baselayers to provide maximum warmth 🎣Self fabric waistband with dual snap closure and zippered fly allow for easy on and off transitions 🎣Dual slash handwarmer pockets 🎣Patterned with a gusseted crotch for maximum comfort and easy layering with bibs or waders. 🎣Tapered hem for a streamline fit when wearing layers underneath and over top 🎣FABRIC TECH: Body - 7.52 oz./yd.2 (255gsm) 93% polyester, 7% elastane finished with antimicrobial + moisture management 🎣Machine wash and dry. See garment label for details.