I-shaped restraints (collar handcuffs)

There doesn't seem to be an official name for these restraints, so I called them "I-shaped" because they look like that when viewed from the back.
The length can be adjusted at the tape that connects the neck and hands.
It's probably easier to imagine if I say the strap used works like the adjustable belt on a fanny pack.

I would not recommend wearing this restraint from the front.

These restraints are designed to be easily removed from the wrists and neck with Velcro tape.

It's important to always have your hands behind your back when attaching these restraints.
That way the wearer will be properly restrained.

A simple combination of a sleeveless sweater and underwear.

The way the collar and shackles are connected behind her back is GOOD!

By placing her ponytail over her shoulder, you can get a nice view of the I shape.