Made of good quality sponge. Easy to scrub without crumbs. Also have many uses beyond car detailing. Fit for Car and general household cleaning glass flooring kitchen hall and other cleaning shops. Dust particles can effectively control the gap in the fiber the quick and effective removal of dirt. Soft comfortable Strong absorption easy to wash and dry. Suitable for use with wax polish tire dressing trim dressing etc. In order to ensure the polishing effect the vehicle must be thoroughly cleaned before waxing. Please allow slight dimension differences due to different manual measurements. Thank you for being so understanding.