Introducing the Theory Crepe Treeca Pull On pants in a vibrant poppy color. These classic slim-leg pants feature slash pockets and are made from a blend of 69% triacetate and 31% polyester. Perfect for any casual outing, these pants are easy to wear and versatile. Dry clean only. Imported. About The Brand – Theory believes the perfect outfit can change the way you feel. For over 25 years, Theory has developed innovative fabrics and highly functional pieces that feel great and fit perfectly. Theory’s seasonal collections are versatile, expertly tailored and easy to wear.