Lululemon Men's T-shirt - Color: Green - Size: M As it's a foreign size M, it's roughly equivalent to a Japanese size L. I, the seller, am 173cm tall and weigh 70kg, and I used this. I've only used it a few times and have stored it carefully in a closet at home. Suitable for a wide range of activities such as yoga, running, the gym, studio workouts, training, and hot yoga. Thank you for looking.