Side zipper closure and elastic at the back of the waistband.
MATERIAL-Washed cotton flannel re-claimed material and lace dead stock fabric. This fabric was previously used as insulation for curtains, so there is some minor discoloration in it. If you look at the photo from behind, you can see what I mean. By using up-cycled materials, we are striving to keep more fabric out of landfills. This also ensures we are not participating in the new fabric industry, which is extremely harmful on our planet.