These are Rubik chinos. I received them as a gift and have only worn them once, storing them in my closet since. They are a polyurethane blend and have stretch. I'm selling them to organize my belongings due to a move. Recommended for those who like select shops such as: United Arrows, BEAMS, SHIPS, FREAK'S STORE, NANO UNIVERSE, URBAN RESEARCH, EDIFICE, JOURNAL STANDARD, TOMORROWLAND, AMERICAN RAGCIE, STUDIOUS, etc.