Opps I thought I replied but posted a new comment I am sorry about that. It will be sent in a soft plastic slip for sure IF I can find a hard plastic card protector I will ship in that as well but the hard plastic isn't a sure thing.
Just to let you know that every time I have won a jersey/materials card that was not shipped in hard plastic and in a bubble mailer it ended up with creases from the materials spot to the edges of the card. Not shipping correct will make the card get damaged and ruin the appeal.