For example, first class may have seats which have a 100 per cent incline, almost converting into a bed, while business-class seats may have a 49 per cent incline, and economy-class seats much less. Obviously, those seats with greater incline require a greater amount of space. Space availability can be a big competitive factor, a difference of 5 cm between seats can be crucial. The type of seat and spacing will also affect the type and style of meal service which is possible. In first class there can be sufficient space available for crew to have access to each individual passenger so that a much more personal level of service can be achieved