Workwear Guides


What the extra markings CI, HI, WR, HRO and SR/SRC on winter safety boots actually mean, what they do not cover, and which combination to choose for an outdoor construction site in a Finnish winter.

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Sheet metal, ventilation ducts, glass and insulation cause most hand cuts on site. Here is how the ISO cut levels A–F work, why the old 1–5 cut number can mislead, and which level to choose for each task.

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How EN ISO 20471 classes apply to work trousers, when class 1, 2 or 3 is required on site, and how a certified jacket + trousers combination reaches class 3.

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What S1P, S3, S3L, S3S and S7 mean under EN ISO 20345:2022, which class makes sense on a construction site, which extra markings to check and how to get the size right.

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A one-page guide to the EN markings on helmets, glasses, hi-vis clothing, safety boots, gloves and rainwear — what each code means and what a construction worker needs.

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What “EN 343 3:1” on a raincoat means, how the 2019 classes work, what 10,000 mm waterproof tells you and how to choose rainwear for site work.

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