The Kosto CHK111 and CHK115 safety harnesses are engineered for reliable fall protection in construction, industrial, and maintenance environments. Both models feature 5 adjustment points for a secure, customized fit and are made from 100% polyester webbing for superior resistance to wear and chemicals. A dorsal aluminum D-ring provides a strong anchorage point, while integrated trauma suspension straps enhance safety in the event of a fall. With Class A certification, these harnesses are designed for workers who need dependable protection at height, combining comfort and durability for daily use.

Key Features

5 adjustment points: Legs, body, and chest adjustments ensure a tailored fit.
Durable webbing: Made from 100% polyester, resistant to chemicals and abrasion.
Strong dorsal anchorage: Aluminum D-ring provides a secure fall arrest connection.
Integrated trauma straps: Built-in suspension straps for added post-fall safety.
Enhanced comfort: Includes seat strap and anti-slip PVC X design.
Inspection-ready: Features an impact indicator and protected label cover.
Compatible system: Works seamlessly with lanyards, SRLs, and anchors.

Intended Use

These safety harnesses are intended for workers at height who need a certified, durable body support system to reduce fall hazards. Both models are suited for rugged daily use in demanding industries.

Construction and general contracting
Industrial and structural steel assembly
Energy and utilities sector
Oil & gas, refinery, and petrochemical sites
Mining and heavy industry
Facility maintenance and repair crews
Transportation, shipping, and warehousing
Bridge and infrastructure maintenance
Confined space entries requiring fall arrest anchorage

Variant Differentiation

CHK111: General Class A harness with pass-thru leg buckles.
CHK115: Class A harness with tongue buckle leg adjustments for added security and ease of use.

Product Specifications

Product Type: Class A safety harness
Material: 100% polyester webbing
Dorsal D-Ring: Aluminum
Buckles: Zinc-coated steel
Adjusters: Zinc-coated steel
Trauma Straps: Integrated, resettable
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)
Size: Universal
Seat Strap: Included for comfort
Inspection Features: Impact indicator, label protector cover

Certifications and Standards

CSA Z259.10-18, Class A: Canadian standard for full-body fall arrest harnesses.
ANSI Z359.11-2021: U.S. standard for full-body harness design and performance.
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.