Multicenter Study to Describe the Performance of the AOS-C2001-B Device in Patients With Colostomy

Inclusion Criteria: * Patient is at least 18 years old * Patient having a colostomy with a diameter less than 30 mm for users of Ø 55 mm pouches or having a colostomy with a diameter less than 40 mm for users of Ø 65 mm pouches * Patient having a colostomy for at least 1 month * Patient using a flat ostomy appliance * Patient having a stoma protusion smaller than or equal to 1.5 cm * Patient capable to apply and remove the appliance himself or with the help of a caregiver (except health care professional) * Patient having a mental capacity to participate to the study (i.e. to understand the study and to answer to the questions) * Patient agreeing to test the new appliance during the evaluation phase (14±3 days) * Patient covered by social security Exclusion Criteria: * Patient experiencing repeated leakages with the usual pouching system * Patient currently suffering from peristomal skin complications (bleeding or red and broken skin at the time of inclusion) * Patient receiving or having received, within the last month, chemotherapy, radiotherapy or corticotherapy * Patient already participating in another clinical study or who have previously participated in this investigation * Pregnant or breast-feeding woman