I tried this Vassarette COMFORTABLY Smooth slip short vs. the Vassarette INVISIBLY Smooth slip short since I was hard pressed to tell the difference between the two:
Pros:
- Good sizing. I'm 5'3", wear a 14 Old Navy Curvy jean and I got the 2XL. This was roomy enough in the butt and thighs and came up high enough to my waist to make me feel like it wasn't going to slide down if I bent over or sat. [the Invisible Smooth was lacking in the butt area and it slid down a bit. Not roomy enough, I felt.]
- Flatlock seams. Nice! Sturdy. [Invisible Smooth has raised seams. It also felt like the seams could pop in the crotch. Also weird crotch panel lightly tacked in.]
- The waistband is comfortable [the Invisible Smooth waistband is lacy, but scratchy.]

Cons:
- The material felt rough and heavy to me. Not something to wear on a hot day, and definitely not on a humid day. [Invisible Smooth seemed lighter and the material was slick so light dresses would slip over it]
- There are leg bands. These will definitely show through a light fabric or super clingy fabric. [No leg bands on the Invisible Smooth. They look just chopped off, but are tacked so the seams won't open. The look is smooth.]
-The legs seemed a bit long, just above the knee. Not so good if you're wearing shorter things [Invisible Smooth legs were shorter]

Verdict: I'm definitely returning the Comfortably Smooth slip short. Although the flatlock seams were really nice and the product felt sturdy overall, and I felt this short fit my butt and hips better, and came up higher on my waist, the heavier, non-slippy material and leg bands were a definite no-go.