The Caterpillar Framework ST S3 WR HRO SRA Safety Boot is a high-performance safety boot engineered for demanding industrial environments where maximum protection and durability are essential. Designed by Caterpillar, the Framework boot is built to perform in extreme conditions, including wet, hot and hazardous workplaces.

Certified to EN ISO 20345:2011, this boot meets S3 requirements, featuring a steel toe (ST) for impact and compression protection and a penetration-resistant midsole for underfoot safety. The WR waterproof rating ensures full resistance to water penetration, making it ideal for outdoor and wet environments.

The HRO-rated outsole provides heat resistance up to 300°C, making the Framework Safety Boot suitable for hot surfaces and industrial heat exposure. The SRA slip-resistant sole delivers reliable grip on ceramic surfaces, while the energy-absorbing heel enhances comfort during long shifts.

Safety Standards & Ratings

EN ISO 20345:2011

S3 – Safety toe, penetration-resistant midsole, water-resistant upper

ST – Steel toe cap

WR – Fully waterproof footwear

HRO – Heat-resistant outsole (up to 300°C)

SRA – Slip resistance on ceramic surfaces

Protection Features

Steel toe cap (impact & compression protection)

Penetration-resistant midsole

Fully waterproof (WR-rated) construction

Heat-resistant outsole (HRO up to 300°C)

SRA-rated slip-resistant sole

Energy-absorbing heel

Suitable For

Construction & civil engineering

Utilities & infrastructure

Manufacturing & heavy industry

Outdoor maintenance & groundwork

Environments with heat, water and slip hazards

Key Features

Certified S3 WR HRO SRA safety protection

Designed for extreme industrial environments

Durable, hard-wearing Caterpillar construction

Excellent traction and thermal resistance

Click here to read our Safety Boots Guide for help with choosing your safety footwear.