The Keen Utility Philadelphia+ 8" Internal MET WP & Polar Traction safety work boot is a heavy-duty CSA approved work boot with internal metatarsal protection that's ideal for working in heavy metal fabrication, masonry, energy, construction, mining and utilities.
The Philadelphia is being discontinued for Fall 2023 but be sure to check out the new;
KEEN CSA Camden Heavy Duty Internal Met Waterproof Work Boot.
The Keen Utility Collection.

Full-Grain Waterproof Leather
A High Cut 8-inch winner from Keen Utility for Heavy Duty Work Environments.
Left and right asymmetrical carbon fiber safety toe; designed for a roomier toe box and maximum comfort
KEEN.DRY waterproof, breathable membrane
Internal, lightweight XRD® Metatarsal Guard for enhanced impact protection
Non-metallic, flexible woven-textile puncture resistant midsole plate - ASTM/CSA certified
The KEEN LUFTcell dual-density PU midsole, infused with air for weightless comfort; you can easily push through the longest shift
Removable Metatomical PU Footbed
Oil-and Slip-Resistant Non-Marking Rubber Outsole Features...
KEEN.POLAR TRACTION: Micro-Glass Fibers create a "MICRO CLEAT" effect for increased Ice Traction.
Non-continuous Goodyear welt construction for enhanced durability under extreme working conditions
Dual Purpose metallic lace hooks
90° heel (5/8" [1.59cm]height) provides stability and helps “catch or lock” the foot in place while the contoured heel guard protects against bumps and scrapes, plus normal wear and tear.
Cleansport NXT for natural odor control
Heat resistant rubber outsole, rated up to 572°F [300°C]
Nylon shank for midfoot support
Electrical hazard (EH) or Electric Shock Resistant (ESR) footwear provides a secondary source of protection in case accidentally coming into contact with live electrical circuits.

PHILADELPHIA + 8 Inch Internal MET PDF SPEC SHEET:

THE NEW KEEN CAMDEN 8" WATERPROOF INT MET WORK BOOT PDF SPEC SHEET:

Keen Mens CSA Philadelphia+ 8 Inch Internal MET Waterproof Safety Work Boot (Carbon Fiber Toe) Clearance