The kind of comfortable you forget you're wearing.
Most basics are cut for someone around 5'9" and then sold to everyone. If you're shorter, that's why you're swimming in the tee, why the leggings bunch at your ankles, and why you've been rolling up the same joggers since they arrived.
Coverline is the version we wanted to buy and couldn't find at a normal price. Cut a bit longer where it counts, a bit more forgiving everywhere else, and made properly. That's it.