A housewife

After putting his arm in the box, the guy manage to put out one suit. It was a housewife skinsuit. It look like a woman who wear something akin to a housewife from the '50s. Except that her body look hollow... and headless. A mask accompaning the suit is attached at the neck, and it can be detached from it.

While looking at the skinsuit, the guy notice a paper on the floor. It was the instructions, which he might have dropped when he pick up the suit. According to it, he have to find a slit on the suit, go inside it, put on the mask and the rest of the job will be done by itself.