Compass Premier Edition Folding, Adjustable Booster The Compass Premier Edition Folding, Adjustable Booster is a much improved booster seat. It is adjustable, folding and still provides comfort. Some of the new features on this booster compared to other Compass includes a larger headrest and deeper side wings. With new features and styles, the B510 Premier Edition booster car seat from Compass is going to be a hit across the States. The deeper side wings help to provide more side impact protection. Side impact protection is essential to car seats as many accidents occur from the side. The larger seating area combined with an EPS lined headrest brings both comfort and safety to the forefront. The Compass Premier Edition Folding, Adjustable Booster has a simple folding action to help make it one of the top booster car seats around.