I purchased this online a few months ago. I have never worn it. I have stored it after taking it out of the bag. *The waist is elastic! The following is a quote from the website: [Size] Set-up: M (size 9) Bust 83 / Hips 91 / Height 158 cm [Items] Blouse / Pants *The size is slightly more relaxed than standard products. [Product Features] "Deep Dyeing" specifically for black formal wear Material used Blouse: Lined (sleeves unlined) Back zipper / Drop shoulder Pants: Elastic waist (no zipper) / Side pockets / Center press [Wearing Occasions] Funeral attendance, farewell ceremony, wake, family funeral, farewell gathering, first anniversary, condolence visit, memorial service (summer also OK), mother's suit (graduation ceremony / graduation ceremony) *We do not recommend wearing it in the position of "chief mourner". [Corresponding Seasons] All seasons Thank you for viewing.