The Kontour Matrix membrane is easy to handle, conforms to defects, not side specific and can be secured with minimal risk of tearing due to its suture pullout strength. It is hydrophilic which allows it to retain its structural integrity with low surface expansion when hydrated. Contains the bone graft material at the defect site over a period of 20 weeks. The resorbable membrane is offered in three sizes 15x20mm, 25x30mm and 30x40mm.