The Kosto X-PRO CHK235 and CHK238 Class AP harnesses are designed for both fall arrest and worker positioning, offering high-performance safety with ergonomic comfort. Made from 100% polyester webbing, they resist chemicals and daily wear while ensuring long service life. Both models include an aluminum dorsal D-ring for fall arrest and dual steel side D-rings for precise positioning. CHK235 combines chest quick-connect with tongue buckle legs for a secure fit, while CHK238 features quick-connect buckles at both chest and legs for faster donning. Breathable honeycomb padding at the shoulders and thighs reduces heat buildup, and integrated trauma suspension straps improve post-fall safety. Classified as Class AP, these harnesses provide complete, versatile protection for industrial workers at height.

Key Features

Dual protection: Certified Class A fall arrest and Class P positioning.
Strong anchorage: Aluminum dorsal D-ring and dual steel side D-rings.
Secure adjustment: CHK235 with chest quick-connect + tongue buckle legs; CHK238 with full quick-connect chest and legs.
Breathable comfort: Honeycomb padding at shoulders and thighs improves airflow.
Integrated trauma straps: Resettable suspension straps for added post-fall safety.
Comfort enhancements: Seat strap and PVC X-back prevent tangling and improve ergonomics.
Durable materials: 100% polyester webbing with zinc-coated steel hardware.
Inspection-ready: Impact indicator, label protector, and QR code instructions.

Intended Use

The CHK235 harness is ideal for professionals who require fall arrest and positioning capabilities in demanding industries.

Construction and roofing projects
Steel erection and welding operations
Oil & gas and petrochemical facilities
Mining and heavy industry
Utilities and energy sector maintenance
Manufacturing and fabrication plants
Transportation, warehousing, and shipping
Bridge and infrastructure projects
Confined space entry requiring anchorage
Scaffolding and elevated platform work

Variant Differentiation

CHK235: Class AP harness with chest quick-connect + tongue buckle legs for secure fit.

CHK238: Class AP harness with full quick-connect buckles (chest + legs) for faster donning.

Product Specifications

Product Type: Class AP harness (fall arrest + positioning)
Material: 100% polyester webbing
Dorsal D-Ring: Aluminum
Side D-Rings: Zinc-coated steel (2)
Chest Buckle: Quick-connect steel
Leg Buckles: Tongue buckle (CHK235) or quick-connect (CHK238)
Adjusters: Zinc-coated steel
Trauma Straps: Integrated, resettable
Seat Strap: Included
PVC X-back: Prevents slippage and tangling
Padding: Honeycomb structure pads at shoulders and thighs
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/water, hang dry; inspect before use; annual inspection required

Certifications and Standards

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