★ Note: Please refer to the dimensions in the dimension table to help you choose a better size, not according to the size chart provided by Amazon. ★ Wear Outside - Ultra light fabric makes you relax when wearing this vest, lining with good quality polyester provides warmth. ★ Wear Inside - As for the super cold winter, this vest can be a layer wearing underneath a parker coat or skiing jacket to keep you warm. ★ Match with sweater t-shirt in the spring and autumnor or wear it under another coat in the depths of winter, warm and fashionable. ★ Occastion: Perfect for many occasions-work, travel, running, hiking, gym, day trips, camping and shopping.