The CSA White rectangle with orange Greek letter omega - indicates soles that provide resistance to electric shock. Such certified footwear contains a sole and heel design assembly that, at the point of manufacturing, has electrical insulating properties to withstand 18,000 Volts and a leakage current not exceeding 1mA for 60 seconds.
Metal toe or steel toe safety shoes provide protection against impact and compression.
The CSA Green Triangle indicates sole puncture protection with a Grade 1 Protective toe to withstand impacts up to 125 joules. Sole puncture protection is designed to withstand a force of not less than 1200 Newtons.