https://github.com/vegaprint/Printing-Loyalty-Cards-Online/wiki/Choosing-Best-Quality-Material-while-Printing-Loyalty-Cards-Online

Which material can be used if you want to print a bunch of loyalty cards? Your card paper should be high-quality and exceptional enough. That paper quality should not be flimsy touch. Choosing a high-quality paper is one of the best practices while making these loyalty cards.