Collaboration sweatpants from Gold's Gym and 100athletic. These were only sold in select stores, including Gold's Gym. I believe I bought this at Gold's Gym Harajuku. I remember it cost around 10,000 yen. It's a size M, but it's a US size, so it fits quite loosely. - Brand: GOLD'S GYM - Color: Black - Size: M - Design: Bodybuilder graphic - Style: Sweatshirt Thank you for looking. Size: M Thank you.