| A2Z Model Code | A2ZSTL-9910-O4 | A2ZSTL-9910-S4 | A2ZSTL-9910-S5 |
| Product Type | PU occupational boot | PU safety boot | PU heavy-duty safety boot |
| Main Material | PU outer material; PU-coated fabric inner lining | PU outer material; PU-coated fabric inner lining | PU outer material; PU-coated fabric inner lining |
| Structure / Coating / Technology | PU/PU double-density sole, SRC professional outsole, waterproof easy-clean boot structure | PU/PU double-density sole, SRC professional outsole, waterproof easy-clean boot structure | PU/PU double-density sole, SRC professional outsole, waterproof easy-clean boot structure |
| Size / Capacity / Range | 37–47 EU / 4–12 UK; 1500 g, size 41 | 37–47 EU / 4–12 UK; 1700 g, size 41 in datasheet; product page also lists 1846 g, No.42 | 37–47 EU / 4–12 UK; 1890 g, size 41 |
| Package Quantity | 5 pairs / box | 5 pairs / box | 5 pairs / box |
| Category / Class | O4 occupational boot | S4 safety boot | S5 safety boot |
| Standards / Certification | EN ISO 20347:2012 O4 SRC | EN ISO 20345:2011 S4 SRC | EN ISO 20345:2011 S5 SRC |
| Protection / Performance Level | Antistatic, SRC slip resistance, ergonomic design; without steel toe and without steel midsole | Steel toe cap protection against falling objects, antistatic, SRC slip resistance, ergonomic design | Steel toe cap plus steel midsole against puncture risk, antistatic, SRC slip resistance, ergonomic design |
| Recommended Working Environment | Wet work, cleaning, agriculture, logistics, light industrial wet areas | Construction, agriculture, machinery, cleaning and wet industrial environments requiring toe protection | Heavy-duty wet and outdoor environments requiring toe and midsole puncture protection |
| Main Advantage | Comfortable occupational boot without steel components | Safety boot with steel toe protection | Highest protection level in this PU boot group |
| Recommended Positioning | Basic occupational boot | Standard safety boot | Heavy-duty premium boot |
| Best For | Cleaning, agriculture and general wet work | Construction and industrial wet work | Mining, recycling, agriculture and heavy-duty work areas |