From the manufacturer

Men's Armour Fleece Pants

Armour Fleece is our original performance replacement for old-school fleece. These sweatpants are light, incredibly warm, and have just the right amount of stretch.

• Armour Fleece is light, breathable & stretchy for warmth that still lets you move
• Loose: Fuller cut for complete comfort.
• Soft inner layer traps heat to keep you warm & comfortable
• Encased elastic waistband with internal drawcord
• Open hand pockets & right-side back pocket
• Main body fabric contains at least 90% recycled polyester, excluding trims & embellishments