Theory Treeca Full Length Pant in Black. - size 6 (also in 0, 10, 2, 4, 8) Theory Treeca Full Length Pant in Black. - size 6 (also in 0, 10, 2, 4, 8) Self: 96% wool 4% elastane Pockets: 100% cupro. Made in China. Dry clean only. Zip fly with hook and bar closure. Slant side pockets and single rear pocket. Traceable wool fabric. Item not sold as set. 18 at the knee narrows to 13 at the leg opening. THEO-WP294. J0701214. Theory is a visionary concept for modern intelligent fashion forward people. Founded in New York and made by the finest of fabrics, this makes the working everyday person feel powerful, ready to face their day.