This card will be printed using UV ink which gives it a premium matte finish. The card has a visible aluminium NFC chip, outer diameter is 40mm, inner diameter 28-mm. The chip can still be slightly visible even when this area printed to give a blended look with your design, you might also want to avoid placing small texts and logos in this area if you don’t want the chip look in the background to interfere with the design.
Depending on your design, you might want to refrain from printing two sides, unless you take into account the transparent effect and the location of your design elements, because printing texts and logos on both side will be to a certain extend visible on the other side, even if the other side is printed with dark colours.
In fact this is the card where you can really show creativity and uniqueness.