Posicast thermoplastics are designed to drape over the patient offering a very conformal fit. They are offered in a variety of material perforations and coatings.
Posicast-Lite feels like a traditional thermoplastic with a smooth spray coating on both sides of the mask and is available in Microperfo.
Posicast-Plus has a soft polyurethane coating on the patient-contacting side for comfort, while the other side features a smooth spray coating to facilitate marking treatment fields on the mask. It is available in Microperfo.