I just bought these in the Gangnam fashion district in Korea. I bought them for my son, but the size was too big. Purchased in Korea last week, only tried on once. It was listed as free size, so I thought it would be okay, but it's too big for my 164cm son. I'd estimate it's about L to LL size. Here are the approximate measurements (taken by a layman): Waist: 66cm when laid flat, elasticated, stretches to 88cm, and can stretch another 5cm if pulled strongly. Rise: 37cm, Inseam: 74cm, Total Length: 108cm, Leg Opening: 30cm (unstretched), Thigh (at the widest part): 40cm. The fabric is relatively thin and a bit "swishy." Probably nylon. The waist is fully elasticated, there are cargo-style pockets on the sides, and pleats at the knees for easy bending. They're loose and roomy, and look comfortable. I thought these pants looked cool on Korean boys, so I wanted my son to have them, but I'm sadly selling them. By the way, Gangnam, as in Gangnam Style, is a district south of the Han River in Korea. It rapidly developed after the 1970s and has become a new political, economic, and commercial center with many high-rise buildings. It's an area where many corporate executives, government officials, and families of the new elite and intellectuals reside.