I've only used this jacket 2 or 3 times since I bought it, so let's say less than 5 times, just to be safe. It's been stored in a closet, hanging on a hanger. The following is quoted from the sales site (^^) ■ Connection Zipper Equipped Model 【Color】 Black 【Material/Material】 Polyester 【Protectors】 ・Standard Equipment: Shoulders, Elbows, Back, Chest ・Optional Equipment: Neck, Sides 【Specifications】 3D mesh panel on the inside of the back ※ The values in the size chart are product dimensions (outer dimensions), so they are quite large. Please note that these are not the recommended sizes. A textile mesh jacket boasting comprehensive protection. Features a three-dimensional mesh structure on the chest, back, and inner back protector pocket. Efficiently cools the body with the wind while riding. ・Standard equipment: shoulder, elbow, and spine protectors ・Built-in chest protection pads ・Uses breathable mesh material ・Equipped with reflectors to increase nighttime visibility ・Three-dimensional cut for enhanced mobility ・Can be equipped with a separately sold one-piece chest protector ・Optional innerwear can be attached ・3D mesh pad Rider's Jacket