NWT The North Face Circaloft Pants size Medium Optic Blue. New with tags. Perfect condition! Meet Circaloft—our new lightweight, highly packable, synthetic insulation line. With an impressive warmth-to-weight ratio, fully recycled body fabrics, adjustable waistband and the ability to stow in an external stuffsack, the Women’s Circaloft Pants are a versatile, go-to layer built for the great outdoors. As one of our Circular Design styles, solid color options are made with sustainably conscious materials and recyclable when you get it back to us.