To use this jacket, simply zip it up and adjust the fit to your liking. You can use the two zip pockets to keep small items like your phone, keys, or cards. When wearing it, you'll notice how well it moves with you, making it great for physical activities. For maintenance, machine - wash it in cold water with like colors. Avoid using bleach as it may damage the fabric. After washing, tumble dry on low. Hang the jacket when it's dry to keep its shape. Be careful not to over - stretch the fabric when putting it on or taking it off to maintain its elasticity.