DESC: The Compass B510 provides the answers for both you and your child. The patented folding feature takes moving the seat from car to car and storing in the trunk to a new level of convenience. It's not just for travel, it is a seat that fits your daily lifestyle.Deluxe padding will keep your child comfortable and content, even on the long trips. A content child makes for happy rides. Rotating arm rests make installation easier because the belt path is clear. Try installing the belt in a booster without rotating arm rests and you will understand. The rotating arm rests also improve the ease of use because children have an easier time crawling in and out by themselves.