According to a release sent out by the National Association of Orthopedic Technologists (NAOT), Gore Procel Waterproof Cast Liner will no longer be available to patients as of January 2012.  DryPRO works over any casting material to keep the entire arm or leg complete dry and clean of any debris, sand or dirt that might cause irritation along with water under the cast. Check out www.drycorp.com for all your waterproof casting needs.