Maximum Flex.
Minimum Weight.
Lightweight performance, job-ready traction, and bold Honey-and-Black style.
MEET THE ULTRA FLEX 337
Built to Work.
Engineered to Move.
The King Welt Ultra Flex 6" Honey/Black Zipper Work Boot is made for hardworking professionals who need dependable durability without the heavy, restrictive feel of a traditional work boot.
Full-grain leather, welt construction, an insulated textile lining, and a lightweight dual-density polyurethane sole combine to provide stability, flexibility, and lasting comfort through demanding workdays.
Ultra Flex at a Glance
Lightweight Flexibility
The dual-density polyurethane sole is engineered to flex naturally while reducing the heavy feel associated with traditional work boots.
Fast Zipper Entry
The convenient side zipper makes the Ultra Flex quick and easy to put on and remove while supporting a dependable everyday fit.
All-Shift Comfort
The Anti-Fatigue Insole and insulated textile lining help keep your feet cushioned, supported, and comfortable through long shifts.
DUAL-DENSITY POLYURETHANE SOLE
Flexible Comfort.
Heavy-Duty Performance.
The dual-density polyurethane sole provides a dependable balance of lightweight flexibility, underfoot stability, and heavy-duty durability for changing work environments.
✓ Lightweight construction
✓ Flexible movement
✓ Heavy-duty support
CONFIDENT TRACTION
Stable Underfoot. Ready to Move.
Oil- and slip-resistant traction combines with stability technology to support confident movement across changing work surfaces.
Premium Leather. Insulated Comfort.
The full-grain leather upper provides oil- and water-resistant properties, while the insulated textile lining adds comfort and warmth through changing working conditions.
WORKPLACE FOOTWEAR STANDARD
ASTM F2413-11
This footwear is listed to the ASTM F2413-11 standard. Always review the product label and your workplace requirements to confirm the exact protection categories needed for your job.
Made for the Way You Work
KING WELT ULTRA FLEX
Move Freely.
Work Confidently.
Step into lightweight flexibility, dependable traction, and all-day King Welt comfort built for the workday ahead.
ULTRA FLEXIBILITY • JOB-READY STRENGTHAll boots are true to size*
Maximum Flex.
Minimum Weight.
Lightweight performance, job-ready traction, and bold Honey-and-Black style.
MEET THE ULTRA FLEX 337
Built to Work.
Engineered to Move.
The King Welt Ultra Flex 6" Honey/Black Zipper Work Boot is made for hardworking professionals who need dependable durability without the heavy, restrictive feel of a traditional work boot.
Full-grain leather, welt construction, an insulated textile lining, and a lightweight dual-density polyurethane sole combine to provide stability, flexibility, and lasting comfort through demanding workdays.
Ultra Flex at a Glance
Lightweight Flexibility
The dual-density polyurethane sole is engineered to flex naturally while reducing the heavy feel associated with traditional work boots.
Fast Zipper Entry
The convenient side zipper makes the Ultra Flex quick and easy to put on and remove while supporting a dependable everyday fit.
All-Shift Comfort
The Anti-Fatigue Insole and insulated textile lining help keep your feet cushioned, supported, and comfortable through long shifts.
DUAL-DENSITY POLYURETHANE SOLE
Flexible Comfort.
Heavy-Duty Performance.
The dual-density polyurethane sole provides a dependable balance of lightweight flexibility, underfoot stability, and heavy-duty durability for changing work environments.
✓ Lightweight construction
✓ Flexible movement
✓ Heavy-duty support
CONFIDENT TRACTION
Stable Underfoot. Ready to Move.
Oil- and slip-resistant traction combines with stability technology to support confident movement across changing work surfaces.
Premium Leather. Insulated Comfort.
The full-grain leather upper provides oil- and water-resistant properties, while the insulated textile lining adds comfort and warmth through changing working conditions.
WORKPLACE FOOTWEAR STANDARD
ASTM F2413-11
This footwear is listed to the ASTM F2413-11 standard. Always review the product label and your workplace requirements to confirm the exact protection categories needed for your job.
Made for the Way You Work
KING WELT ULTRA FLEX
Move Freely.
Work Confidently.
Step into lightweight flexibility, dependable traction, and all-day King Welt comfort built for the workday ahead.
ULTRA FLEXIBILITY • JOB-READY STRENGTHAll boots are true to size*