The Toho MH109 4D-Ring Full Body Safety Harness with side-release Cobra-style buckle is built for multiple height-safety roles: fall arrest, work positioning, and climbing / tower work. It uses robust 100% polyester webbing (≈ 45 mm wide) with high breaking strengths for both webbing and hardware [citation:2]. The harness includes multiple attachment points: dorsal D-ring (for fall arrest), two lateral/waist D-rings (for work positioning), and one sternal/chest D-ring (for climbing / ladder access / rescue) [citation:2]. It has full adjustability at six points (chest, shoulder, waist, legs) to fit various users, along with comfort features like a seat strap and lumbar pad [citation:2]. Key Features: Material & Build Strength — 100% polyester webbing; webbing width ~45 mm; breaking load ≧25 kN; hardware (rings and buckles) forged/steel, treated, with zinc plating [citation:2]; Attachment Points / D-Ring Configuration — Includes a dorsal D-ring (fall arrest), two waist (lateral) D-rings (work positioning), and one sternal (chest) D-ring (climbing / ladder access / rescue) [citation:2]; Cobra-Style Quick-Release Buckle — Patented side-release Cobra locking mechanism — both tabs must be pressed simultaneously to open; cannot release under load; minimum breaking strength ~18 kN in loop configuration [citation:2]; Adjustability / Fit — Adjustable at six points: chest, shoulder, waist, legs [citation:2]; Comfort & Ergonomics — Includes a seat strap and lumbar pad to reduce pressure and discomfort during extended wear or when suspended [citation:2]; Standards & Certification — Complies with EN 361 (full-body harness for fall protection) and EN 358 (work positioning/restraint) [citation:2]; Load & Weight Capacity — Built to support user weight up to 140 kg; total harness weight ~1.7 kg [citation:2]. Industrial Uses / Applications: Tower climbing / telecommunications maintenance; Scaffold work / façade / construction at height; Window washing / high-rise building maintenance; Rescue / emergency access tasks; Industrial plant maintenance (overhead work); Utility / power line work [citation:2].