Sit harnesses provide significant support to the legs and back for work carried out in suspension. Should not be used on their own in fall arrest situations.
Combination harnesses offer the best characteristics of both sit harnesses and full body fall arrest harnesses. They can be used for any fall protection method, e.g. fall arrest, work positioning, rope access.
Height safety fall arrest harnesses are not designed for extended periods of suspension. Full body harnesses may offer one or two attachment points - one each at the front and rear.
For use in conjunction with sit harnesses. Chest harnesses may be able to combine with sit harnesses to form a full body harness if the correct connecting element is used.