According to the regulations, "koshimaki" should be as follows: the term of wearing it was May 5 - September 8 (in old lunar calendar); the background color was black; when one wore it, she hung the sode (the sleeves of the kimono) with a special obi (kimono sash) called "sageobi."
それによる「腰巻」とは、着用期間は旧暦5月5日～9月8日、地色は黒で、「提帯（さげおび）」という特殊な帯に袖を引っかけて着用した。