Metal toe or steel toe safety shoes provide protection against impact and compression.
The CSA Yellow rectangle with a green “SD” and grounding symbol indicates soles are static-dissipative. The outer soles are made from an antistatic compound, capable of dissipating an electrostatic charge in a controlled manner. The test criteria are 106 to 108 Ohms. Note that SD footwear without toe protection will not have sole protection certified by CSA.
The CSA Blue Rectangle indicates Grade 1 protective toe without sole puncture protection. Grade 1 toe withstands impacts up to 125 joules.