Flexible bellow covers are usually used to protect linear guides of machine tools against scraps and debris, and come in different sizes and shapes. A bellow is a cover made out of coated textile, folded in accordion. Its main function is to fold and to unfold alongside with the moving parts of the machine. Depending on the application, it can be subjected to mechanical stress, chemical aggression, high temperature, abrasion and repetitive impacts. Therefore, making a long-lasting bellow requires technical know-how and quality materials.