To use this sweatshirt, simply put it on and enjoy its comfort all day. You can wear it alone on a mild day or layer it under a jacket when it's colder. As for care, it's best to machine wash it in cold water with like colors. Avoid using bleach as it may damage the fabric. Tumble dry on low to keep its shape. Since it's made to order, please be patient during the processing time of 7 - 10 business days.