Guaranteed Alterations is a fast and efficient tailor located in downtown San Rafael. It can perform alterations on both men's and women's clothing and it specializes in leather modifications—so feel free to bring in a damaged leather jacket to get fixed. Guaranteed Alterations also offers same-day service, so if there happens to an emergency (or just one of those days) and some immediate tailoring is needed—Guaranteed Alterations is the place to be.