BiB - Ariel stuck in black PVC overalls
These PVC overalls are fun to wear and easy to clean if the wearer got messy. I ordered them from the Internet (Rayon). The shiny surface wears off fairly easily though, and with the slightly stretchy material you can pull the buttons loose from the holes if you put too much force on them. (With my previous pair I needed to use super glue multiple times on the side buttons.)
I put Ariel in them to demonstrate a few ways to use overalls themselves for restraining. I started by letting her put her hands through the loops in the straps, and then moved the sliders far enough down so that she couldn't pull her hands out again. The PVC doesn't slide easily, so her hands were really stuck there. (If you use overalls of a more slippery material you might need to make holes in the straps just above the sliders and put a padlock though it.)
After that I let her put her hands through the open side buttons, and buttoned them closed around her wrists. With these overalls the bottom part of the button row worked well and she couldn't get her hands out again. With different overalls you might need to try a few positions to find the place where the distance between the buttons is just right. This works best with a sturdy pair of overalls like denim ones. It almost looks like Ariel has her hands in the pockets, so this technique might even be usable for some hidden public bondage.