Highly resistant CO-EX membrane. Hydrocolloid under-pan is adherent, hypoallergenic, and it is not easy to roll up. Description1. Highly resistant CO-EX membrane.2. Foam under-pan is adherent, hypoallergenic, and it is not easy to roll up.3. The whole product is soft, comfortable, and in miniature size.4. It is easy to use and with reasonable price.5. It is for patients with solid faces and ...