Wing loading of parachutes is measured similarly to that of aircraft, comparing exit weight to area of parachute fabric. Typical wing loading for students, accuracy competitors, and BASE jumpers is less than 5  kg per square meter – often 0.3 kilograms per square meter or less. Most student skydivers fly with wing loading below 5  kg per square meter. Most sport jumpers fly with wing loading between 5 and 7  kg per square meter, but many interested in performance landings exceed this wing loading. Professional Canopy pilots compete with wing loading of 10 to over 15 kilograms per square meter. While ram-air parachutes with wing loading higher than 20 kilograms per square meter have been landed, this is strictly the realm of professional test jumpers.