The skirt wraps around and fastens with snap buttons.
If you choose a skirt without a slit, it will have 4 snap buttons. Your selected waist measurement will be when all 4 buttons are fastened.
If you choose a skirt with a slit, it will have 3 snap buttons. Your selected waist measurement will be when 2 buttons are fastened. If you find the slit too deep or prefer not to have it, you can wear the skirt with all 3 buttons fastened. However, keep in mind that in this case, the waist will be 4 cm tighter.