The U-Power ULTRA s ESD work shoes are an excellence of the Red Lion line, designed to offer an unprecedented experience of comfort and safety. Compliant with the EN ISO 20345:2022 standard, the ULTRA s ESD shoe is classified as S1PS FO SR , guaranteeing complete protection and high grip. Their low design and exceptional lightness, with a reference weight of 1.2047 kg for size 42, make them ideal for prolonged use in dry environments, such as transport, logistics, craft workshops and the tertiary and service sectors, including assembly environments.
Detailed Technical Specifications:
- Model: ULTRA s ESD
- Protection Class: S1PS FO SR
- Article: RL20476
- EU regulation: EN ISO 20345:2022
- Line: Red Lion
- Reference weight (on TG 42): 1.2047 kg
- Upper: Ultra-breathable mesh with soft suede inserts
- Water vapor permeability: 7.8 mg/(cm² h) (requirement ≥ 0.8)
- Permeability coefficient: 72.8 mg/cm² (requirement ≥ 15)
- Lining: Wingtex® breathable air tunnel
- Water vapor permeability: 23.7 mg/(cm² h) (requirement ≥ 2)
- Permeability coefficient: 189.7 mg/cm² (requirement ≥ 20)
- Abrasion Resistance (DRY): 25,600 cycles (Meet)
- Abrasion Resistance (WET): 12,800 cycles (Meets)
- Toe cap: AirToe Aluminum
- Clearance after impact: 16.5 mm (requirement ≥ 14 mm)
- Free height after compression: 14.5 mm (requirement ≥ 14 mm)
- Anti-perforation: Save & Flex PLUS®, “no metal” textile anti-perforation insole
- Puncture resistance: ≥ 1100 N (Compliant)
- Insole cover: U-Power original
- Abrasion resistance: No damage (after ≥ 400 cycles)
- Midsole: Soft expanded PU and Infinergy®
- Outsole: PU/PU and Infinergy®
- Abrasion resistance (volume loss): 77 mm³ (limit ≤ 250 mm³)
- Bending strength: 3.2 mm (limit ≤ 4 mm)
- Outsole/midsole peel resistance: 3.4 N/mm (requirement ≥ 3 N/mm)
- Resistance to hydrocarbons (% volume variation): 11.6% (limit ≤ 12%)
- Heel energy absorption: 36 J (minimum ≥ 20 J)
- Slip Resistance (SR)
- On ceramic tile with glycerin (heel forward 7°): 0.31 (requirement ≥ 0.19)
- On ceramic tile with glycerin (tip back 7°): 0.28 (requirement ≥ 0.22)
- On ceramic tile with water + NaLS (heel forward 7°): 0.42 (requirement ≥ 0.31)
- On ceramic tile with water + NaLS (tip back 7°): 0.36 (requirement ≥ 0.36)
- Anatomical Fit/Shape: Natural Confort 11 Mondopoint®
- Electrical Resistance Category (ESD): < 10^9 Ω (Compliant)
- Metal Free: Yes
The upper , made of ultra-breathable mesh with soft suede inserts, guarantees excellent water vapor permeability, essential for keeping the foot dry and comfortable. The Wingtex® lining , with its air tunnel structure, further contributes to breathability and abrasion resistance, both dry and wet.
The AirToe Aluminum toecap offers robust protection against impacts and compression, far exceeding regulatory requirements. The Save & Flex PLUS® anti-perforation insole , being "metal-free", ensures complete protection against punctures without adding weight or interfering with metal detectors.
The PU/PU and Infinergy® outsole , combined with the soft expanded PU midsole, not only offers excellent heel energy absorption and resistance to abrasion and hydrocarbons, but, thanks to Infinergy® technology, returns over 40% of the energy. The slip resistance (SR) values are high, ensuring stability and safety even on difficult surfaces.
The Natural Confort 11 Mondopoint® fit ensures an anatomical shape that adapts to the foot for long-lasting comfort. ESD compliance makes these shoes suitable for environments sensitive to electrostatic discharge.
