ENVE has long shipped their carbon clincher wheel sets with their in house rim strips. After using these strips for years we decided to offer them as an aftermarket item for either replacement or an upgrade from standard rim strips.
The 22mm rim strip ships with all Smart ENVE Systems (SES) rims and the 18mm with all classics rims (45, 65). When installing rim stips make sure the strip is not too wide. A wide rim strip will extend up the side walls of the rim and rub the tube causing punctures.