Quantity & User Fit: This set includes four black hook waistband extenders, designed to be unisex for both men and women, which means it can meet the waist adjustment needs of different groups, eliminating the need to purchase separate extenders for family members​ Polyester Material Benefit: The extenders are made of polyester, a material that does not damage clothing fabrics and has no toxic or unpleasant odors, so you can use them with skirts or trousers without worrying about leaving marks or causing discomfort to the skin Detachable & Reusable Design: Each waist extender features a detachable structure that allows quick attachment to clothing buttons and easy removal when not in use, and it can be reused multiple times, providing a long-term solution for adjusting waistlines Clothing Compatibility: These extenders work with various types of clothing including skirts, regular trousers and casual pants, making them a versatile tool to extend waistbands and help you continue wearing your existing clothes without needing new ones Scene Adaptability: They are suitable for different scenarios such as home wear, work outfits and post-pregnancy clothing adjustments, ensuring you can get a comfortable fit whether you are at home, in the office or going through post-pregnancy body changes