Original: $174.25
-65%$174.25
$60.99The Story
Steel Blue Southern Cross Zip Composite S3 Safety Boot – Black Amber (398590-BBG)
Product Description
The Southern Cross is one of Steel Blue's most trusted styles, and this new Black Amber colourway with a composite toe cap is the most exciting version yet. Built for tradespeople who need genuine all-day protection without the dead weight of a steel toe, the 398590-BBG brings together everything that's made the Southern Cross a go-to across UK construction, utilities, and heavy industry — now with a lightweight composite safety toe that passes the same 200-joule impact standard as its steel equivalent.
At 150mm ankle height with a scalloped, padded collar, it moves with you rather than fighting you on a long shift. The industrial-grade side zip means you're in and out in seconds, while the lace closure lets you dial in the fit precisely. Premium water-resistant nubuck leather keeps the elements out, and the abrasion-resistant scuff cap protects the toe from the daily knock-about that kills cheaper boots early.
Underneath it all is Steel Blue's Trisole® Comfort Technology — the Ortho Rebound® polyurethane footbed and strategically placed Poron® pads work together to cushion your feet, knees, hips, and lower back from shift-long fatigue. The Baltico moisture-wicking lining keeps things dry from the inside, and the TPU outsole is heat-resistant to 130°C, oil-resistant, and SRC-rated for slip resistance on both wet ceramic and steel surfaces — tested to EN ISO 20345.
Key Features
- 200J composite toe cap — metal-free, airport-friendly, same protection as steel
- S3 rated: EN ISO 20345 certified — penetration resistance, antistatic, water-resistant upper
- Trisole® Comfort Technology with Ortho Rebound® footbed and Poron® cushioning
- Industrial-grade side zip with lace closure for a secure, precise fit
- Premium water-resistant nubuck leather upper
- Abrasion-resistant scuff cap for extended toe protection
- Baltico moisture-wicking hydrophobic lining
- TPU outsole: SRC slip-rated, oil-resistant, heat-resistant to 130°C
- 150mm ankle height with scalloped padded collar
- Black Amber colourway — brand new for 2026
- Available in UK sizes 7-14
Technical Specifications
| Specification | Detail |
|---|---|
| Model | Southern Cross Zip Composite S3 |
| SKU / Style Code | 398590-BBG |
| Colour | Black Amber |
| Toe Cap | 200J Composite (non-metallic) |
| Safety Rating | S3 / EN ISO 20345 |
| Slip Rating | SRC |
| Upper | Water-resistant nubuck leather |
| Lining | Baltico hydrophobic moisture-wicking |
| Outsole | TPU (heat-resistant to 130°C, oil & slip resistant) |
| Footbed | Ortho Rebound® PU with Poron® padding (Trisole® system) |
| Closure | Industrial side zip + lace |
| Boot Height | 150mm ankle |
| Sizes | UK 5 – UK 14 |
| Certification | EN ISO 20345, SRC |
| Warranty | 6 months manufacturer's warranty |
| Comfort Guarantee | 30-day comfort guarantee |
Delivery & Guarantee
Free express delivery on Steel Blue Boots. 30-day comfort guarantee, if they don't feel right, we'll sort it. 6-month manufacturer's warranty as standard.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Steel Blue Southern Cross Zip Composite S3 Safety Boot – Black Amber (398590-BBG)
Product Description
The Southern Cross is one of Steel Blue's most trusted styles, and this new Black Amber colourway with a composite toe cap is the most exciting version yet. Built for tradespeople who need genuine all-day protection without the dead weight of a steel toe, the 398590-BBG brings together everything that's made the Southern Cross a go-to across UK construction, utilities, and heavy industry — now with a lightweight composite safety toe that passes the same 200-joule impact standard as its steel equivalent.
At 150mm ankle height with a scalloped, padded collar, it moves with you rather than fighting you on a long shift. The industrial-grade side zip means you're in and out in seconds, while the lace closure lets you dial in the fit precisely. Premium water-resistant nubuck leather keeps the elements out, and the abrasion-resistant scuff cap protects the toe from the daily knock-about that kills cheaper boots early.
Underneath it all is Steel Blue's Trisole® Comfort Technology — the Ortho Rebound® polyurethane footbed and strategically placed Poron® pads work together to cushion your feet, knees, hips, and lower back from shift-long fatigue. The Baltico moisture-wicking lining keeps things dry from the inside, and the TPU outsole is heat-resistant to 130°C, oil-resistant, and SRC-rated for slip resistance on both wet ceramic and steel surfaces — tested to EN ISO 20345.
Key Features
- 200J composite toe cap — metal-free, airport-friendly, same protection as steel
- S3 rated: EN ISO 20345 certified — penetration resistance, antistatic, water-resistant upper
- Trisole® Comfort Technology with Ortho Rebound® footbed and Poron® cushioning
- Industrial-grade side zip with lace closure for a secure, precise fit
- Premium water-resistant nubuck leather upper
- Abrasion-resistant scuff cap for extended toe protection
- Baltico moisture-wicking hydrophobic lining
- TPU outsole: SRC slip-rated, oil-resistant, heat-resistant to 130°C
- 150mm ankle height with scalloped padded collar
- Black Amber colourway — brand new for 2026
- Available in UK sizes 7-14
Technical Specifications
| Specification | Detail |
|---|---|
| Model | Southern Cross Zip Composite S3 |
| SKU / Style Code | 398590-BBG |
| Colour | Black Amber |
| Toe Cap | 200J Composite (non-metallic) |
| Safety Rating | S3 / EN ISO 20345 |
| Slip Rating | SRC |
| Upper | Water-resistant nubuck leather |
| Lining | Baltico hydrophobic moisture-wicking |
| Outsole | TPU (heat-resistant to 130°C, oil & slip resistant) |
| Footbed | Ortho Rebound® PU with Poron® padding (Trisole® system) |
| Closure | Industrial side zip + lace |
| Boot Height | 150mm ankle |
| Sizes | UK 5 – UK 14 |
| Certification | EN ISO 20345, SRC |
| Warranty | 6 months manufacturer's warranty |
| Comfort Guarantee | 30-day comfort guarantee |
Delivery & Guarantee
Free express delivery on Steel Blue Boots. 30-day comfort guarantee, if they don't feel right, we'll sort it. 6-month manufacturer's warranty as standard.
