3M DBI-SALA Medium Delta Full-Body Harness With Back D-Ring And Quick Connect Buckle Leg And Chest Straps. Delta Comfort harnesses combine a set of -Å“industry-first- advancements, with popular features making them the workhorse of the industry. Today’s Delta represents the culmination of more than twenty years of design, research, manufacturing know-how and on-the-job performance. Delta harnesses are as tough as the guys who wear them. These Delta Comfort harnesses feature shoulder, back and leg padding, coated, corrosion-resistant hardware, and abrasion-resistant webbing and a build quality that is second to none. The padding wraps around you and incorporates vent windows allowing direct air contact and better circulation cooling the body.