Steel Blue Women's Southern Cross Zip Scuff - FIX RADIO Ladies Safety Boots S3

Overview

The Steel Blue Women’s x Fix Radio Foundation is a limited-edition S3 safety boot designed specifically for women — and one that gives back. It’s based on Steel Blue’s best-selling Southern Cross Ladies Zip Scuff, finished in premium black leather with bold orange laces and exclusive Fix Radio branding, and created in partnership with Fix Radio, the UK’s builders’ station.

Crucially, this is a true ladies’ fit, not a men’s boot in smaller sizes. Steel Blue’s women’s range is built on a last designed for the shape of women’s feet — a shorter ankle length and a smaller instep — so it fits and supports properly rather than swimming at the heel or gaping at the ankle. If you’ve struggled to find safety boots that actually fit, this is why.

And this isn’t just another pair of work boots. £5 from every pair sold goes directly to the Fix Foundation, which supports UK tradespeople with counselling, advice and mental health support. Steel Blue are known worldwide for their charity-boot programmes — from the pink boots supporting breast cancer charities to the blue boots supporting mental health — and this edition lets UK workers give back to the community they’re part of.

Underneath is the full specification: a 150mm ankle boot with a 200J steel toe cap, industrial-grade side zip and abrasion-resistant scuff cap, on Steel Blue’s Trisole® Comfort Technology — three-density soling with Ortho Rebound® polyurethane and Poron® pads to cushion feet, knees, hips and lower back across long shifts.

Looking for the men’s version? See the men’s Fix Radio edition, or browse the full Steel Blue range.

Key features & specifications

• True ladies’ fit: designed for the shape of women’s feet — shorter ankle length, smaller instep
• Charity edition: £5 from every pair goes to the Fix Foundation, supporting UK tradespeople’s welfare and mental health
• Safety rating: S3 — certified to EN ISO 20345 (steel toe + penetration-resistant midsole + water-resistant upper + antistatic + energy-absorbing heel)
• Toe protection: 200J steel toe cap, with abrasion-resistant scuff cap
• Ankle height: 150mm, with padded collar and tongue
• Upper: Premium full-grain water-resistant cowhide leather (black), double-stitched, with non-corrosive lacing and orange Fix Radio laces
• Closure: Quick-release industrial-grade side zip + lace-up
• Outsole: Antistatic TPU — slip and oil resistant, heat resistant to 130°C
• Midsole: Penetration-resistant (protects against sharp objects underfoot)
• Comfort: Trisole® three-density soling with Ortho Rebound® footbed and Poron® cushioning
• Lining: Soft Baltico® moisture-wicking lining with Freshe Bioscience anti-odour treatment
• Sizes: UK 3–8 (ladies)
• Style code: 592719-FIX

Download the full Steel Blue Southern Cross Ladies Zip Scuff technical spec sheet (PDF).

Who it’s for

For any woman working on the tools or on site who wants a safety boot that genuinely fits: construction, groundwork, warehousing, agriculture and general trade work. The true ladies’ fit makes it a standout for anyone tired of wearing undersized men’s boots — and the Fix Foundation donation means your purchase supports the wider trade community too.

Sizing & fit

This is a true ladies’ fit built on a women’s last, so order your normal size. Steel Blue boots run true to size; if you’re a half size, size down. Available in UK 3–8. If the fit isn’t right, send them back and we’ll exchange them at no extra cost, and every pair comes with Steel Blue’s 30-day 100% comfort guarantee.

How to look after your boots

• Treat them with Steel Blue Dubbin to condition the leather and maintain water resistance.
• New to side-zip boots? Check out our ‘Zip Tips’ video here to get the best fit from day one.

Why buy from BIG Boots UK?

We’re a small, family-run business (a husband-and-wife team) that has sold Steel Blue boots since 2020, and we were one of the first to sell them online in the UK. Originally from Australia, our knowledge and love of Steel Blue is second to none — our founder Ryan has worn Steel Blue boots for over 15 years. As an authorised UK distributor, every pair is genuine, fully warranted, and backed by people who actually wear the boots.

FAQs

Is this a true ladies’ fit, or a men’s boot in smaller sizes?
A true ladies’ fit. Steel Blue’s women’s range is built on a last designed specifically for women’s feet, with a shorter ankle length and smaller instep — so it fits properly rather than being a scaled-down men’s boot. It’s one of the reasons women rate Steel Blue so highly.

How does buying these boots support charity?
£5 from every pair sold goes directly to the Fix Foundation, the charity arm of Fix Radio, which supports UK tradespeople with counselling, advice and mental health support. You get a proven safety boot and contribute to the trade community at the same time.

What does the S3 rating mean?
S3 is the standard rating for most UK construction and outdoor trade work under EN ISO 20345: a 200J toe cap, penetration-resistant midsole, water-resistant upper, antistatic protection and an energy-absorbing heel. This boot meets the full S3 specification and is SRC slip-rated.

Are Steel Blue boots true to size?
Yes. Steel Blue ladies’ boots fit true to size on the women’s last, so order your normal size. If you’re a half size, size down. Exchanges are free if the fit isn’t right.

Do you offer next day delivery?
Yes. All Steel Blue boots come with free express next-day delivery via Royal Mail when ordered before 2pm on business days. If you need a guaranteed, confirmed next-day slot, DPD next-day is available for £8.

How long have you been selling Steel Blue boots?
Ryan has worn Steel Blue and Australian work boots his whole working life, and has been selling them here in the UK since 2020 — making BIG Boots UK one of the very first online retailers of Steel Blue boots in the country. We only recommend boots we’d wear ourselves.