There are three attachment points to the seat to ensure it doesn’t sag or swing while underway. Two adjustable straps at the top, which you loop around the head rest supports, holds it snug at the top. There’s a single (OPTIONAL) minimalistic elastic band in the middle designed to hold it tight without interfering with the passenger’s comfort. And, at the bottom, there are two cords to cinch it to the seat’s hinges.
Photos of blacks will be available at a later date.