Steel Blue Southern Cross Zip Scuff - FIX RADIO Safety Boots S3
£127.95
£127.95
Details
Overview
The Steel Blue x Fix Radio Foundation is a limited-edition S3 safety boot built for UK tradespeople — and one that gives back. It’s based on Steel Blue’s best-selling Southern Cross 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.
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 throughout their careers. 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 is the edition that lets UK workers be part of that, giving back to the very community that builds the country.
Underneath the special edition is the same proven boot: 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 — a three-density soling system with Ortho Rebound® polyurethane and Poron® pads that cushion feet, knees, hips and lower back across long shifts.
See the full Steel Blue Southern Cross range for other colours and options.
Key features & specifications
- 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 7–12
- Style code: 392661-FIX
Download the full Steel Blue Southern Cross Zip Scuff technical spec sheet (PDF).
Who it’s for
A great choice for any tradesperson who wants a proven S3 site boot with a bit of purpose behind it — construction, groundwork, warehousing and general trade work. If you know Fix Radio, or you’d simply like your next pair of boots to support tradespeople’s mental health, this is the one.
Sizing & fit
Steel Blue boots are true to size — order the same size as your usual trainer. If you’re a half size, we recommend sizing down. Available in UK 7–12. If the fit isn’t right, send them back and we’ll exchange them for the size you need 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
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. It’s part of Steel Blue’s wider charity-boot tradition — you get a proven safety boot and contribute to the trade community at the same time.
Is this a full safety boot or just a branded edition?
It’s a full S3 safety boot — the Fix Radio edition is built on Steel Blue’s best-selling Southern Cross Zip Scuff, so you get the complete 200J steel toe, penetration-resistant, water-resistant, antistatic specification. The branding and charity donation are added on top, not in place of the protection.
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 boots fit true to size, so order your normal trainer 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.
Sizing Recommendations
Shipping Details
Next Day delivery for express orders placed before 2pm (Business Days Only) Free for orders over £110 or boots over £110
Standard Delivery:
Free Postage for orders over £60 - Royal Mail Tracked 48 with text & e-mail updates
Normally arrives in 2-3 business days
Orders under £60 - Royal Mail 48 Tracked - £2.99
Normally arrives in 2-3 business days
Royal Mail 24 or Parcel Force - £6.50
Next day delivery for orders placed before 2pm!
(Business Days Only) - Select at Checkout
Text and e-mail updates included
All our orders are tracked however if you have any concerns, please feel free to contact us.
Overboots are sent with Royal Mail as a large letter so may not have tracking.
**Please note
We will always try to make sure your orders arrive as soon as possible however please understand once it's with the courier, it's out of our hands.
Please contact us if you have any questions
ryan@bigboots.co.uk
Australia’s leading manufacturer of work and safety boots, since 1995
Our story began in Australia, and we’ve since grown to become Australia’s leading manufacturer of work and safety boots with subsidiaries in Europe, the USA and New Zealand. Since 1995, we’ve been putting the same amount of care, dedication and craft into our work as the tradespeople who wear our boots.
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FAQs
Do you offer next day delivery?
Yes we do, for £6.50 and if you order before 2pm, you’re order should arrive the next day with Royal Mail or Parcel force.
Boot orders over £110 get free next day delivery. Steel Blue Boots and Mongrel Boots get free express postage.
How do I return or exchange my items?
We recommend for any exchanges, you purchase the size you're after and then return your current pair for a refund. This saves time waiting for your new item to arrive.
We know buying footwear and workwear online can be difficult, so we try to make returns as easy as possible. You arrange the return postage back to us, which is how we keep our express delivery free.
Please click here to start the process.
Do you ship to Europe and Ireland?
Unfortunately not, we do ship to Northern Ireland however due to brexit and the complications with shipping and then duties costs, we find it better for customers to try and find a local supplier as it will save you money on duties.
Northern Ireland customers do not have to pay duties as you’re part of the United Kingdom and postage is the same as the mainland.
My boots are faulty within the 6 month warranty period, what do I need to do to submit a claim?
Please click on the link below and follow the instructions. If your boots are just outside 6 months, please contact us directly to discuss options - ryan@bigboots.co.uk or 0330 043 0873
https://www.bigboots.co.uk/pages/steel-blue-warranty-details
Do you have a physical store?
Unfortunately we don't at the moment. We're in the process of looking for a new showroom and once that becomes available, we'll let you know.