The Dyestar Blank White Plastic Cards with PET Core is a high-quality composite plastic card made with 60% polyester and 40% PET core material. This combination enables the cards to withstand high-heat temperatures during hot lamination and re-transfer card printing. Sold in packs of 100 Composition: 60% Polyester. 40% PET Standard CR80 card size (85.60 x 53.98mm) 760 micron/30 mils Ideal for hot lamination and re-transfer card printing