SAME BINDER DESIGN. NOW EXTRA DURABLE. The Classic 2.0 is our NEW standard chest binder. It retains our original design but now features an added durability stitch. We added this running stitch due to customer feedback so we can ensure that your binder is extra equipped to handle the stresses of frequent use. 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.