Sixton Cuban Boa S3 Safety Shoes

Lightweight safety shoe for physical work and long shifts

When a workplace risk assessment requires protection for the toes and underside of the foot, safety footwear must also support standing, walking and other physically demanding tasks. A lightweight construction, step cushioning, breathable materials and the quickly adjustable BOA® closure make this shoe practical for active work.

The Sixton Cuban BOA® 91373-00L is a low-cut safety shoe certified to EN ISO 20345:2011 S3 SRC. It combines an aluminium toe cap, metal-free penetration protection, a water-resistant microfibre upper and ESD properties for controlling static electricity.

Key comparison data

Key features

• The BOA® Fit System makes the shoe easy to adjust: the closure consists of a dial, a lightweight cable and low-friction guides. It allows quick fastening and precise fit adjustment during the working day without tying conventional laces.
• The aluminium toe cap protects the toes: the Alu SXT 2.0 toe cap withstands an impact energy of 200 joules. Aluminium provides the required protection without using a steel toe cap.
• Metal-free penetration protection shields the underside of the foot: the flexible KX insert covers the sole area and helps prevent sharp objects from penetrating through the bottom of the shoe. According to the manufacturer, it withstands over 1,100 newtons when tested with a 3.0 mm nail.
• The dual-density PU sole cushions each step: the softer midsole flexes under the foot while the outsole forms a durable contact surface against the floor. This construction reduces impacts transmitted from hard surfaces to the feet.
• The Five 4 Fit insole cushions the full sole of the foot: the removable anatomical insole combines a multilayer structure with memory foam cushioning. Its breathable, absorbent materials improve comfort during prolonged use.
• The 3D Air Circulation lining manages heat and moisture: the breathable lining promotes airflow inside the shoe and helps keep the feet more comfortable during active work.
• Heel and midfoot supports stabilise each step: Dynamic HC Control holds the heel in position and helps control lateral ankle movement. StabilActive supports the heel bone, instep and joints of the foot during natural movement.
• The water-resistant upper reduces water absorption: the black 1.6-1.8 mm microfibre suede upper meets the product's WRU requirement. It withstands splashes and moisture better than a standard upper, but the shoe is not specified as waterproof.

Fit and comfort

The manufacturer specifies a Fit 11 last and a size range of 35-48. The BOA® closure helps secure the shoe around the foot, while the internal heel structure reduces unwanted movement inside the shoe. The manufacturer's stated weight is 520 g. The lightweight PU sole, memory foam insole and breathable lining support walking and prolonged standing in physical work.

Working conditions

The shoe is suitable for physical work where the workplace risk assessment requires toe protection, penetration protection and a slip-resistant outsole. Its ESD properties also make it suitable for environments where controlled electrostatic discharge is important because sensitive electronic parts or equipment are handled.

Protection features

• S3: the shoe has a 200 J toe cap, penetration protection, a closed heel area, antistatic construction, heel energy absorption and a water-resistant upper. The cleated outsole supports movement across varying surfaces.
• FO: the outsole resists the effects of fuel oil in accordance with the standard. This helps the sole material retain its function if it comes into contact with oil-based substances.
• SRC: the outsole has been slip tested on both ceramic tile and steel surfaces according to EN ISO 20345:2011. The tested grip supports movement on smooth working surfaces.
• ESD: the sole construction helps discharge static electricity from the wearer in a controlled manner. This feature helps protect sensitive electronic components against electrostatic discharge.

Technical data