The waist has elastic and the material is stretchy. The color is navy for the waist ribbing and black overall. There is no lining. The fourth image is the closest color match. Actual measurements (flat lay): Waist: 32cm Hips: 43cm Length: 54cm Back slit: 12cm Please note that these measurements are approximate due to being taken by a non-professional. No pets, no smokers. Only tried on at home, but stored by a non-professional. Will be folded and shipped, so please understand that there may be creases.