U-POWER MONSTER S3S CI FO SR ESD are modern safety shoes from the Red Lion line, designed for users who expect a high level of protection, comfort and durability during intensive daily work. The model combines an extremely abrasion-resistant PUTEK® PLUS upper, an AirToe Aluminium safety toe cap, a flexible Save & Flex® PLUS anti-perforation insert and the fast, precise BOA® Fit System.

The Infinergy® technology integrated into the sole helps absorb impact with every step and improves comfort during long hours of standing or frequent walking. The footwear complies with EN ISO 20345:2022 and offers protection class S3S CI FO SR together with ESD properties.

Key advantages of U-POWER MONSTER

• S3S CI FO SR protection class

• ESD – Electrostatic Discharge

• quick and precise BOA® Fit System

• lightweight AirToe Aluminium safety toe cap

• flexible Save & Flex® PLUS anti-perforation insert

• highly abrasion-resistant PUTEK® PLUS upper

• excellent breathability

• sole with Infinergy® technology

• shock-absorbing PU midsole

• slip-resistant SR outsole

• fuel and oil resistant outsole FO

• cold insulation CI

• suitable for work in humid environments

• sizes 38–48

PUTEK® PLUS – exceptional abrasion resistance

The upper of the MONSTER model is made from technical PUTEK® PLUS material, characterised by very high abrasion resistance while maintaining good breathability.

The material has been developed for intensive use in working environments where footwear is exposed to frequent rubbing, contact with equipment, floors or work materials.

This makes U-POWER MONSTER a strong choice for warehouse and logistics work, assembly, technical service and industrial applications.

BOA® Fit System – quick and precise fit

Instead of traditional laces, the MONSTER model uses the BOA® Fit System.

The dial-based mechanism enables quick, even and precise adjustment of the footwear to the foot. It provides stable fastening and allows the fit to be easily adjusted throughout the day.

This solution is especially convenient for users who frequently put on and remove their work shoes.

Comfort is additionally improved by a padded nylon tongue, which helps reduce pressure on the upper part of the foot.

AirToe Aluminium – lightweight toe protection

U-POWER MONSTER is equipped with an AirToe Aluminium safety toe cap.

The use of aluminium provides the required level of toe protection while reducing weight compared with conventional steel toe caps.

As a result, the footwear remains more comfortable even during long working days.

Save & Flex® PLUS – flexible anti-perforation protection

Protection against sharp objects underfoot is provided by the Save & Flex® PLUS system.

This flexible, non-metallic anti-perforation insert protects the sole of the foot from sharp objects on the ground.

Its textile construction allows the shoe to remain more flexible and comfortable while walking compared with traditional steel anti-perforation inserts. The model complies with the requirements of the S3S protection class according to EN ISO 20345:2022.

Infinergy® – cushioning and walking comfort

One of the key technologies used in the MONSTER model is Infinergy®, integrated into the sole.

The material helps absorb the energy generated when the foot contacts the ground and contributes to a more comfortable next step.

Combined with the PU foam midsole, it helps reduce the sensation of hard surfaces and improves comfort during prolonged walking and standing.

This is particularly important for warehouse, logistics, production and service employees who cover many kilometres during the working day.

Stable and slip-resistant SR outsole

The compact PU tread has been designed to provide good grip and stability while walking.

The multifunctional heel construction helps stabilise the foot and distribute pressure correctly during movement.

The footwear carries the SR marking, confirming enhanced slip resistance in accordance with EN ISO 20345:2022.

ESD – controlled dissipation of electrostatic charges

U-POWER MONSTER features ESD (Electrostatic Discharge) properties.

The footwear helps control and dissipate accumulated electrostatic charges, making it suitable for working environments where reducing electrostatic discharge is particularly important.

S3S CI FO SR protection class

S3S – a high protection level including toe protection, resistance of the upper to water penetration and absorption, and anti-perforation protection compliant with class S requirements.

CI (Cold Insulation) – insulation of the sole against cold.

FO (Fuel Oil) – outsole resistance to fuel oils and hydrocarbons.

SR (Slip Resistance) – enhanced slip resistance.

ESD – controlled dissipation of electrostatic charges.

Applications

U-POWER MONSTER safety shoes are recommended for:

• warehouses and logistics centres,

• transport,

• assembly work,

• technical service,

• industrial environments,

• production halls,

• jobs requiring frequent walking,

• humid working environments,

• service industries.

Technical data

Manufacturer: U-Power
Model: MONSTER
Line: Red Lion
Manufacturer code: 0RL20366
Type: safety low shoes
Protection class: S3S CI FO SR
ESD: yes
Upper: highly abrasion-resistant PUTEK® PLUS
Toe cap: AirToe Aluminium
Anti-perforation insert: Save & Flex® PLUS
Fastening system: BOA® Fit System
Sole: PU with Infinergy® technology
Slip resistance: SR
Oil resistance: FO
Cold insulation: CI
Standard: EN ISO 20345:2022
Sizes: 38–48

U-POWER MONSTER – protection, BOA® and Infinergy® comfort

U-POWER MONSTER is designed for users who do not want to choose between protection and comfort. Durable PUTEK® PLUS, the fast BOA® Fit System, lightweight AirToe Aluminium, flexible Save & Flex® PLUS protection and Infinergy® cushioning combine to create modern safety footwear for intensive daily use.