FoxsealEffective on blood containing thinners like Heparin or Coumadin Pre scored folded so it can be used as is Packed into deeper wounds or quickly torn into smaller pads to fit smaller injuries Designed for simple, consistent performance for the treatment of open chest wounds. Works on wet or hairy skin and comes in a compact size that fits your medical kit. There are two seals per pack that allow entry and exit wounds to be treated with the valve free