Compaq is designed for small vehicles where seat in a a convertible in a rearward facing position is at a premium. In the infant position it takes up less room than most other convertibles seats on the market. However, in the forward facing position the height of the shoulder slot positions hasn't been compromised so your child can remain comfortably seated until about four years of age. The seat has two crothch strap positions which is ideal for premature babies to ensure they are securely harnessed.