The Kosto X-PRO CHK234 Class AP harness combines fall arrest and positioning capabilities with advanced ergonomic comfort. Built from 100% polyester webbing for durability and chemical resistance, it integrates an aluminum dorsal D-ring for fall arrest and two zinc-coated steel side D-rings for worker positioning. Tongue buckle adjustments at the waist and legs, combined with a chest quick-connect, provide a secure and customizable fit. For long shifts, breathable honeycomb padding at the shoulders, back, thighs, and lumbar region ensures superior ventilation and comfort. With integrated trauma suspension straps, a seat strap, and a ventilated lumbar support belt, this harness offers a complete solution for demanding industrial applications requiring both safety and comfort.

Key Features

Class AP harness: Combines fall arrest (Class A) and positioning (Class P).
Secure adjustments: Chest quick-connect buckle and tongue buckle legs/waist.
Strong anchorage: Aluminum dorsal D-ring plus dual steel side D-rings.
Ergonomic support: Breathable honeycomb padding at shoulders, thighs, back, and lumbar area.
Integrated trauma straps: Resettable straps improve suspension safety after a fall.
Comfort upgrades: Seat strap and ventilated lumbar pad enhance positioning comfort.
Durable construction: 100% polyester webbing with zinc-coated steel hardware.
Inspection-ready: Impact indicator, protected label cover, and QR code instructions.

Intended Use

The CHK234 harness is built for workers who require both fall arrest and positioning in industries where extended wear comfort is essential.

Construction and roofing projects
Steel erection and welding operations
Oil & gas and petrochemical facilities
Mining and heavy industry
Utilities and energy sector maintenance
Transportation, warehousing, and shipping
Industrial manufacturing and fabrication
Bridge and infrastructure maintenance
Confined space entry requiring anchorage and retrieval
Scaffolding, towers, and elevated platforms

Product Specifications

Product Type: Class AP harness (fall arrest + positioning) with belt
Material: 100% polyester webbing
Dorsal D-Ring: Aluminum
Side D-Rings: Zinc-coated steel (2)
Buckles: Quick-connect chest; tongue buckle legs and waist
Adjusters: Zinc-coated steel
Trauma Straps: Integrated, resettable
Seat Strap: Included
Lumbar Pad: Ventilated, padded
PVC X-back: Prevents tangling and slippage
Padding: Honeycomb pads at shoulders, thighs, and back
Lanyard Keeper: Included
SRL Slots: Dual
Maximum Arresting Force: 8 kN (1800 lbs)
Harness Stretch: 0.6 m (2 ft)
Tensile Strength: 22 kN (5000 lbs)
Capacity: 59–141 kg (130–310 lbs)
Sizes: S/M and L/XL
Maintenance: Clean with mild soap and water; hang dry; inspect before every use; annual inspection by a competent person

Certifications and Standards

CSA Z259.10-18, Class AP: Canadian standard for harnesses certified for fall arrest (Class A) and positioning (Class P).
ANSI Z359.11-2021: U.S. standard for design and performance of full-body harnesses.
ANSI A10.32-2023: Safety requirements for fall protection in construction and demolition.
OSHA 1910 / 1926 Subpart M: U.S. regulations for fall protection in general industry and construction.