Stihl Advance Universal Harness Standard

The most common Stihl double shoulder harness is commonly used with straight shaft line trimmers. This harness has more padding and increased back and shoulder comfort. 

The comfortable straps distribute the weight evenly across your shoulders and the waist clip easily clips onto your brushcutter (if it has the loop to accommodate the harness)

The plastic pad rests against your leg sitting in between you and the shaft.