SAME BINDER DESIGN. NOW EXTRA DURABLE. You asked, and we listened! Classic 2.0 is our original chest binder design plus a new durability stitch. Because of the Customer Survey feedback we received, we added this running stitch to ensure that your binder is extra equipped to handle the stresses of frequent use.We believe so strongly in the Classic 2.0 that we plan for it to become the new standard, eventually replacing our original Classic binders once that stock runs out.NOTE: The new feature does not change the overall structure, fit, size, or compression level that you may have become accustomed to with our Classic binders.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Our patented design uses a double panel binder made with a nylon spandex blend and cotton for extra flattening effect. The binding panel does not go below the chest, so it does not bind your stomach. This material is breathable, and can be comfortably tucked in.Because each body is unique, we recommend getting sized by one of our Customer Care Team members before making a binder purchase. Contact them by email support@gc2b.co or via our Live Chat website feature. You can also size yourself by following these instructions.