Steel Blue Southern Cross Zip Composite S3 Safety Boot – Black Amber

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.