Nora Noratherm R+ S5 Insulated Safety Boot | CSA Rated Cold Insulation to Minus 50°C with Steel Toe, Metatarsal Protection, and Ladder Grip

CSA Insulated Rubber Safety Boots with Steel Toe, Anti-Puncture Plate, -50°C Cold Protection, and Heat-Resistant Sole | Made in Italy

Product Overview

Most insulated boots stop claiming cold protection around minus 20. The Nora Noratherm R+ S5 is rated to minus 50°C. PURE PERFORMANCE polyurethane with millions of trapped air bubbles locks in heat from the sole up, while a steel toe cap, steel anti-puncture plate, and metatarsal protection cover the three highest-impact zones on a work boot.

Key Features

• Cold insulation rated to minus 50°C. PURE PERFORMANCE polyurethane compound with millions of trapped air bubbles provides thermal insulation in extreme cold, keeping feet warm through full shifts in freezing conditions.

• Triple certification: EN ISO 20345:2022, CSA Z195-14, ASTM F2413-24. Meets S5 safety class for Canadian, American, and international job sites. Cold insulation minus 50 safety boots CSA-rated for regulated worksites across North America.

• Steel toe cap with metatarsal protection. Impact protection for the toes and the metatarsal bones across the top of the foot. Steel toe rubber boots with metatarsal protection for heavy industrial environments where falling objects are a daily risk.

• Steel anti-puncture plate. Steel plate in the sole blocks nails, screws, and sharp debris from penetrating through the bottom of the boot.

• Rubber outsole with SR anti-slip, ladder grip, and ice lugs. Maximum traction on wet, oily, and frozen surfaces plus a dedicated ladder rung grip zone. Anti-slip insulated rubber boots for icy conditions on construction sites, refineries, and outdoor infrastructure.

• Heat-resistant sole to 300°C contact (HRO). Sole withstands brief contact with hot surfaces up to 300°C without melting or deforming.

• Chemical-resistant shell. High resistance to alkalis, chemical acids, grease, sludge, vegetable oils, and mineral oils. CSA Z195 insulated safety boots with ladder grip for chemical plants, refineries, and food processing.

• Antibacterial nylon lining with Arneflex insole. Antibacterial lining reduces odor and bacteria. Arneflex antistatic open-cell foam insole included for breathability and comfort during long shifts.

• Anatomical shape with fatigue-reducing heel. Contoured fit follows the natural shape of the foot. Heel profile reduces leg fatigue. Kick-off spur for hands-free boot removal. Internal spikes hold trouser legs inside the boot.

• Made in Italy, PURE PERFORMANCE compound. Produced in Italy. ASTM F2413 rubber work boots for extreme cold, built from a polyurethane compound that stays flexible and durable in harsh conditions.

Specifications

Size Chart

Cleanflow stocks the Nora Noratherm R+ S5 in US sizes 9 through 13. Dimensions from the Nora size guide:

Applications

The Nora Noratherm R+ S5 is triple certified (CSA, ASTM, EN ISO) for regulated worksites. Cold insulation to minus 50 work boots with steel toe, metatarsal, anti-puncture plate, chemical resistance, and ladder grip for crews who work in harsh winter conditions.

• Oil, gas, and pipeline operations

• Mining and resource extraction

• Chemical plants and refineries

• Food processing and cold storage

• Utilities, power generation, and infrastructure

• Municipal winter operations and snow removal

See the full insulated rubber safety boots collection.

Buy the Nora Noratherm R+ S5 from Cleanflow Utility Supply Company

Cleanflow Utility Supply Company is an authorized distributor of Nora safety boots. The Noratherm R+ S5 ships across Canada and the USA. Free shipping on orders over $199. Returns accepted on qualifying orders. CSA insulated rubber safety boots in Black, US sizes 9, 10, 11, 12, and 13.

Browse more insulated rubber safety boots or heavy-duty winter safety boots from Cleanflow, or email info@cleanflow.ca for bulk pricing, net terms, and crew orders.

Frequently Asked Questions

What does EN ISO 20345 S5 CI SR LG FO M HRO mean?

S5 is the safety class (steel toe + waterproof + anti-puncture). CI is cold insulation. SR is an anti-slip outsole. LG is a ladder grip. FO is a hydrocarbon-resistant outsole. M is metatarsal protection. HRO means the sole resists heat by contact up to 300°C. Each letter is a tested and certified protection level.

Does this boot meet CSA requirements for Canadian job sites?

Yes. The Noratherm R+ carries CSA Z195-14 certification. It also carries ASTM F2413-24 for American job sites and EN ISO 20345:2022 for international compliance. One boot, three standards.

How cold can these boots handle?

Rated to minus 50°C for cold insulation (CI). The PURE PERFORMANCE polyurethane compound traps millions of air bubbles that act as thermal insulation. Suitable for extended shifts in extreme cold, including Arctic, mining, and outdoor winter operations.

What is metatarsal protection?

A protective element that covers the metatarsal bones across the top of your foot between the toes and the ankle. It guards against impact from falling objects that land on the top of the boot, not just the toe area.

What sizes are available?

Cleanflow stocks the Noratherm R+ S5 in US sizes 9, 10, 11, 12, and 13. The weight is 1,220g per boot at size 42 (US 9). Black only. Arneflex antistatic insole included with every pair.