The eco-conscious now have an alternative to standard PVC cards. These earth-friendly blank cards are made of BioPVC, a completely biodegradable material that helps to drastically reduce the carbon footprint of your ID program. BioPVC cards perform just like regular PVC cards, only they're able to biodegrade naturally once you discard them into a fertile environment (garbage, compost, etc.). Card size: CR80 30mil. 500 cards per pack.