I'm selling this because I haven't had a chance to wear it. Size S. It fits perfectly for a muscular person who is 170 cm tall. Size: Length, Width, Shoulder Width, Arm Circumference S: 63 cm, 50 cm, 38 cm, 24 cm M: 64 cm, 53 cm, 40 cm, 25 cm L: 67 cm, 55 cm, 41 cm, 26 cm XL: 70 cm, 59 cm, 43 cm, 29 cm Product Description: The Montreal Vest from HOUSTON is here, featuring warm and lightweight high-performance insulation from 3M, Thinsulate™. This vest combines technologically advanced insulation with a multi-layered nylon material that is water-repellent and wind-resistant, resulting in a stylish yet functional piece. The design is based on a tactical smock, with attention to detail such as the use of parachute buttons (slot buttons). It has a total of eight pockets: four side pockets with flaps, two slash pockets, and two inner pockets. It offers ample storage for small items like smartphones, cigarettes, and wallets, eliminating the need for a bag. Thinsulate™ insulation provides approximately 1.5 to 2 times the heat retention compared to standard polyester cotton or down of the same thickness! It effectively traps the heat generated by the body, providing exceptional warmth even in chilly seasons. This is a highly recommended vest that will be useful in various situations, from urban wear to outdoor activities and motorcycling.