Trousers with zippers to the waist are to facilitate putting on a KAFO orthosis, therefore the trousers have two zippers with a lock. This lock makes it impossible to unfasten the zipper if it is set in the correct position. Thanks to this application, the trousers do not have to be very wide. An adjustable waistband allows us to precisely adjust the trousers to a given person. The trousers are made of soft sweatshirt fabric.