Cellona Sub-Compression Wadding Bandage The fine fibrous web is strong enough to permit application in circular turns, but is easy to tear and provides a smooth surface. The material's self-adhesion facilitates application by simply smoothing down. Cellona synthetic undercast padding is air-permeable and compensates for changes in temperature. The fibres do not absorb any moisture, the casting tape hardens faster, and the good padding effect is retained with long-term wear. 100% polyester fibres, no optical brighteners, in various sizes in roll form,with paper wrapper; sterilizable (autoclave at 121C or other methods). Cellona synthetic undercast padding is also used for padding splints, zinc paste bandages (Unna's Boot) and adhesive bandages. For wound treatment - in combination with textile dressings or ointment tulle - Cellona acts as an air-permeable cushion.