Listings list woven polyester and woven viscose as the primary materials and note the fabric is lightweight.
Many listings are one-size meant to fit roughly S–XL. They’re labeled for women and described as pull-on styles with elastic or smocked chest panels for stretch and an adjustable fit.
They use a pull-on closure and commonly feature elastic or smocked (ruched) bust panels that provide support and allow easy slip-on wear.
Smocked or elastic ruched busts provide stretch and shaping at the bust. A-line or swing hems create a loose, flowy skirt that doesn’t cinch the waist tightly.
Listings describe the fabrics as soft and lightweight and note the material is non-sheer in multiple items.