Thick business cards are actually made of multiple plies of premium stationery stocks to give you a thick stock business card. Once these plies are assembled you will not tell it is made of ply. For easy reference most normal business cards are printed on 14pt or 16pt paper stocks. 38pt is three-ply with a color fill of your choice.
For all white thick cards see our MegaThick cards that will be all white on the sides and no color contrast.