Built to Flex.
Ready to Work.
Lightweight flexibility, convenient zipper entry, and heavy-duty performance in Brown and Black.
MEET THE ULTRA FLEX 337
Lightweight Comfort.
Heavy-Duty Performance.
The King Welt Ultra Flex 6" Brown/Black Zipper Work Boot is designed for hardworking professionals who need dependable durability without the heavy, restrictive feel of a traditional work boot.
Premium full-grain leather, welt construction, an insulated textile lining, and a dual-density polyurethane sole provide the stability, flexibility, traction, and comfort needed for demanding all-around work.
Ultra Flex at a Glance
Quick Zipper Entry
The convenient side zipper makes the Ultra Flex quick and easy to put on and remove while helping maintain a dependable everyday fit.
Lightweight Flexibility
The dual-density polyurethane sole delivers heavy-duty support without the unnecessary weight and stiffness of a traditional work boot.
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 Strength.
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
SIDE-ZIPPER CONVENIENCE
Get Ready Without Slowing Down
The side zipper provides convenient entry and removal, helping you get your boots on quickly and move confidently through the workday.
Confident Traction
Oil- and slip-resistant traction combines with stability technology to help support confident movement across changing work surfaces.
PREMIUM MATERIALS
Full-Grain Leather Construction
The Brown-and-Black full-grain leather upper offers oil- and water-resistant properties, while the insulated textile lining adds comfort and warmth through changing work conditions.
Performance Underfoot
Made for the Way You Work
KING WELT ULTRA FLEX
Move Freely.
Work Confidently.
Step into zipper convenience, lightweight flexibility, dependable traction, and rugged Brown-and-Black style.
ULTRA FLEXIBILITY • JOB-READY STRENGTHAll boots are true to size*
Built to Flex.
Ready to Work.
Lightweight flexibility, convenient zipper entry, and heavy-duty performance in Brown and Black.
MEET THE ULTRA FLEX 337
Lightweight Comfort.
Heavy-Duty Performance.
The King Welt Ultra Flex 6" Brown/Black Zipper Work Boot is designed for hardworking professionals who need dependable durability without the heavy, restrictive feel of a traditional work boot.
Premium full-grain leather, welt construction, an insulated textile lining, and a dual-density polyurethane sole provide the stability, flexibility, traction, and comfort needed for demanding all-around work.
Ultra Flex at a Glance
Quick Zipper Entry
The convenient side zipper makes the Ultra Flex quick and easy to put on and remove while helping maintain a dependable everyday fit.
Lightweight Flexibility
The dual-density polyurethane sole delivers heavy-duty support without the unnecessary weight and stiffness of a traditional work boot.
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 Strength.
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
SIDE-ZIPPER CONVENIENCE
Get Ready Without Slowing Down
The side zipper provides convenient entry and removal, helping you get your boots on quickly and move confidently through the workday.
Confident Traction
Oil- and slip-resistant traction combines with stability technology to help support confident movement across changing work surfaces.
PREMIUM MATERIALS
Full-Grain Leather Construction
The Brown-and-Black full-grain leather upper offers oil- and water-resistant properties, while the insulated textile lining adds comfort and warmth through changing work conditions.
Performance Underfoot
Made for the Way You Work
KING WELT ULTRA FLEX
Move Freely.
Work Confidently.
Step into zipper convenience, lightweight flexibility, dependable traction, and rugged Brown-and-Black style.
ULTRA FLEXIBILITY • JOB-READY STRENGTHAll boots are true to size*
