The harness includes two attachment points, waist and sternum, and a gear loop for your equipment. Perfect for military, fire, rescue, industrial, or commercial operations when a rear fall-arrest D-ring is not required. The two models, 330BLK and 353, are identical in terms of construction except for the stitching colors. The 330BLK model is certified by UL as an NFPA class III harness while the 353 model is not due to the lack of contrast stitching (a requirement of the standard). Some operations require all-black so in that case the 353 would be the answer.