The Kosto X-PRO CHK328 Class ALP harness is designed for professionals requiring complete fall protection, combining fall arrest, positioning, and ladder climbing safety in one solution. Constructed with 100% polyester webbing for durability and chemical resistance, it features four lightweight aluminum D-rings: dorsal for fall arrest, frontal for ladder systems, and dual side rings for positioning. Quick-connect buckles at the chest and legs ensure rapid donning with a secure fit. Breathable honeycomb padding at the shoulders and thighs reduces heat buildup, while integrated trauma suspension straps provide post-fall safety. A PVC X-back prevents slippage and tangling, and ergonomic support enhances comfort during long shifts.

Key Features

Class ALP design: Combines fall arrest, positioning, and ladder climbing safety.
Four aluminum D-rings: Dorsal, frontal, and dual side D-rings.
Fast donning: Quick-connect buckles at chest and legs for secure fit.
Ergonomic comfort: Breathable honeycomb padding at shoulders and thighs.
Integrated trauma straps: Resettable straps improve suspension safety post-fall.
Stability built-in: PVC X-back prevents harness slippage and tangling.
Durable materials: 100% polyester webbing and aluminum hardware.
Inspection-ready: Impact indicator, protected label cover, and QR code instructions.

Intended Use

The CHK328 is designed for demanding environments where workers require fall arrest, positioning, and ladder safety in one harness.

Construction and roofing projects
Structural steel and welding operations
Oil & gas and petrochemical facilities
Mining and heavy industry
Utilities and energy sector maintenance
Manufacturing and fabrication plants
Transportation and warehousing
Bridge and infrastructure maintenance
Confined space entry requiring anchorage
Scaffolding and elevated platforms
Vertical ladder climbing systems

Product Specifications

Product Type: Class ALP harness (fall arrest + positioning + ladder safety)
Material: 100% polyester webbing
Dorsal D-Ring: Aluminum
Front D-Ring: Aluminum (ladder climbing)
Side D-Rings: Aluminum (2)
Chest Buckle: Quick-connect
Leg Buckles: Quick-connect
Adjusters: Aluminum
Trauma Straps: Integrated, resettable
Seat Strap: Included
PVC X-back: Prevents tangling and slippage
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 each use; annual inspection required

Certifications and Standards

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