The AVAO SIT work positioning and suspension seat harness is designed for greater comfort in a variety of situations. The wide, semi-rigid waistbelt and leg loops provide excellent support. Its lightweight, breathable construction maximizes air flow. The harness also makes it easier to carry and organize work tools, with multiple gear loops and slots for attaching CARITOOL tool holders and TOOLBAG tool pouches. This seat harness is designed to be converted into a fall-arrest harness when combined with a TOP chest harness, or into a rope access harness when combined with a TOP CROLL S or L chest harness. The AVAO SIT leg loops have DOUBLEBACK self-locking buckles; AVAO SIT FAST leg loops have FAST LT buckles.