Our 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