Base Camel Top Safety BootPortwest Base Camel Top Safety Boot S3 HRO CI HI SRC The CAMEL TOP S3 HRO CI HI SRC safety shoes are built for the toughest environments, combining unmatched protection and durability. Certified to the highest standards, they feature a water resistant upper, a puncture resistant sole, and slip resistance tested on multiple surfaces (SRC). Designed for extreme conditions, they offer heat insulation (HI), cold insulation (CI), and a heat resistant sole