Brown work pants with reinforced knees and multiple pockets, displayed flat on a white background.
Black denim pants with reinforced knees, front pockets, and a branded label on the waistband, displayed on a plain background.
Olive green pants with reinforced knee patches and multiple pockets, laid flat on a white background, showcasing rugged design.
Brown work pants with reinforced knees and multiple pockets, laid flat on a white background. Durable and stylish design.
Brown work pants with back pockets, belt loops, and a small logo patch. Durable fabric, ideal for outdoor activities.
Man in white shirt and black pants stands against a beige background, hands in pockets, wearing black boots.
Man in black pants and boots, white shirt, stands against a beige background, hands in pockets, showcasing casual style.
Man in white shirt and black jeans stands on beige background, showing back view. Jeans have a visible logo patch on pocket.
Close-up of khaki pants with a metal button, zipper, and red label reading "Don't let the bastards get you down" inside the fly.
Close-up of tan pants with a front pocket, belt loops, and visible stitching, highlighting casual style and fabric texture.
Close-up of a brown fabric pocket with a small red and white "Iron and Resin" label, showcasing detailed stitching and metal rivets.
Close-up of khaki fabric with red stitching, metal D-ring, and button detail, showcasing durable textile craftsmanship.
Close-up of brown fabric with visible stitching and a pocket, showcasing texture and craftsmanship in detail.
Close-up of brown khaki pant leg with visible stitching, highlighting the fabric texture and seam detail.
Close-up of a rolled-up khaki pant leg with visible red stitching, highlighting the fabric texture and seam detail.
Brown work pants with reinforced knees and multiple pockets, displayed flat on a white background.
Black denim pants with reinforced knees, front pockets, and a branded label on the waistband, displayed on a plain background.
Olive green pants with reinforced knee patches and multiple pockets, laid flat on a white background, showcasing rugged design.
Brown work pants with reinforced knees and multiple pockets, laid flat on a white background. Durable and stylish design.
Brown work pants with back pockets, belt loops, and a small logo patch. Durable fabric, ideal for outdoor activities.
Man in white shirt and black pants stands against a beige background, hands in pockets, wearing black boots.
Man in black pants and boots, white shirt, stands against a beige background, hands in pockets, showcasing casual style.
Man in white shirt and black jeans stands on beige background, showing back view. Jeans have a visible logo patch on pocket.
Close-up of khaki pants with a metal button, zipper, and red label reading "Don't let the bastards get you down" inside the fly.
Close-up of tan pants with a front pocket, belt loops, and visible stitching, highlighting casual style and fabric texture.
Close-up of a brown fabric pocket with a small red and white "Iron and Resin" label, showcasing detailed stitching and metal rivets.
Close-up of khaki fabric with red stitching, metal D-ring, and button detail, showcasing durable textile craftsmanship.
Close-up of brown fabric with visible stitching and a pocket, showcasing texture and craftsmanship in detail.
Close-up of brown khaki pant leg with visible stitching, highlighting the fabric texture and seam detail.
Close-up of a rolled-up khaki pant leg with visible red stitching, highlighting the fabric texture and seam detail.

Anvil Work Pants (formerly Union Work Pants)

$ 139.00
Description

Previously known as our Union Work Pants, now renamed the Anvil Work Pants. Same fit, same durability.

Even a simple man can appreciate a few bells-and-whistles sometimes, which is why we doubled down on the layering of the knee panels and ankle cuffs on these badass britches. The Anvil Work Pants are the legit heavy workhorse pants you've been looking for. Deep pockets in both the front and back, a perfectly placed utility pocket for extra storage on the right leg, and you’ve got an undisputed workhorse in your wardrobe that will fit better-and-better as you break them in.

THE SPECS + DETAILS:

  • 14oz 100% cotton duck canvas
  • Double-layered front thigh-to-knee panels
  • Custom I&R rivets on all pockets and critical stress points
  • Shank button waistband + YKK zippered fly
  • Double needle felled rise, back yoke, and outseam 
  • Utility pocket on right leg
  • Double layered rear ankle cuff for extra durability
  • D-ring key clip on the right side
  • 33" inseam
How It Fits

We've slightly reworked our fit on the Union Work Pants. The classic slim-to-straight-fit feels great for a work pant like these, with the slight taper below the knee.  We'd say the waist on these run true-to-size. However, if you have any question on what size to order, please reach out to us before placing your order.

Wash & Care

When your waxed canvas goods are due for a cleaning, use cold water and a mild soap. We use specific waxed canvas care products for keeping care of our Rambler Jacket. Head over to our "How To Care For Waxed Canvas" page for more information on this.

At the end of the day, our goods are meant to be worn in, not out. With the correct care, we want our customers to be able to treat their gear with the tough love it was intended to take. You can also take a look at our Wash & Care Guide to keep your goods performing for a lifetime.

Shipping & Returns

We offer FREE economy shipping on all contiguous U.S. orders $99+. We also provide 30-day FREE exchanges on all online orders in the contiguous U.S. Please read our returns policy on our FAQ page for more details.

All sale items are final.

Color
Size
Minus Plus
Earn
139
Points
  • Lifetime Guarantee
  • 14oz Duck Cotton Canvas
  • Double Needle Felled Seams
More details Right

an undsiputed workhorse:

these pants were made for a hard day's work, we got tired of pants that couldn't live up to our lifestyles. well, enter the Anvil Work Pants (formerly Union Work Pants). we doubled down on the layering of the knee panels and rear cuffs on these badass britches. Throw in a utility pocket for extra storage and you’ve got the new undisputed workhorse of your wardrobe that will fit better and better as you break them in.

Man in brown pants and blue jacket stands on dirt path, keys clipped to pocket. Rugged boots suggest outdoor setting.
Iron & Resin Union Work Pants: Duck Canvas Workwear
a workhorse canvas, built to withstand

14oz duck cotton canvas

you may have heard us mention duck canvas before, or maybe even have one of our past pieces. we've used cotton duck, like our Union Work Pants or Mechanic Jacket, for all sorts of daily trades. changing oil on bikes. camping. nailing up james hardie lap siding on the house. sanding fiberglass. you name it. cotton duck is so damn versatile. and it truly breaks in like a dream fabric. one of our favorites by far.

Learn More
Don't Trust Us? Here's What Other Are Saying:

"Iron and Resin knows plenty when it comes to making remarkably long-lasting gear that can tolerate just about anything — from a long day on the job to a motorcycle-driven road trip to hour upon hour of fall and winter chores (hey, that firewood won’t chop itself). The Union Work Pant can stand up to all of those tasks and more, what with its dependable 14oz. Cotton canvas and double-knee reinforcement. Add in a double-layer rear leg cuff — an unheard-of touch on most pants — and you’ve got a set of trousers that can work … and work." -Gear Moose

Iron & Resin Union Work Pants: Duck Canvas Workwear
Man in a workshop wearing brown pants and a black shirt, surrounded by tools and materials, stands near a colorful surfboard.
Pants That Can Take A Beating:

we all need pants, some of us need pants that can actually take a beating. That's where the Anvil Work Pants (formerly Union Work Pants) come in. Drag them behind a car, take a ride to Baja in them, do whatever, all we know is that these can handle real abuse.

Overall rating: 4.8131866 / 5 from 182 reviews.

AI Generated Review Summary

The Anvil Work Pants are highly regarded for their durable and comfortable material, perfect fit, and functional pockets. Customers appreciate the solid construction and top-notch quality, though opinions on the length vary. The great look and excellent color add to the overall appeal of these heavy-duty pants.

Summary topics

  • Material Quality (11%): Customers keep praising the durable and comfortable material, with high quality materials and top-notch stitching.
  • Fit (35%): Many customers loved the fit of these pants, describing it as perfect, amazing, and true to size.
  • Pocket Functionality (10%): Customers raved about the pockets, describing them as perfect, functional, and fitting well.
  • Aesthetic Appeal (8%): Customers appreciated the great look of these pants, although some mentioned the fit around the thighs.
  • Color Satisfaction (6%): Customers expressed satisfaction with the color, as it was described as excellent, great, and nice.

Review topics: ["size","fit","length","legs","waist","color","fabric","pants","material","looks","stretch","feels","pockets","quality","comfort","pair","cut","customer service","construction","knees","stitching","zipper","buttons","canvas","measurements","durability","value","work","rise","inseam"].

Review highlights

  • "High quality materials and a great fit!" — Jeremy C.
  • "Awesome pants maid with the perfect tapered fit and yet slight stretch for cowhide keeping the canvas tough feel look." — Bodie H.
  • "The quality and strength of the fabric is immediately apparent as soon as you pull them out of the package." — Colin P.

Reviews

Great pants, even better customer service!

"I had bought a pair of these pants a couple years ago, and I put the pants through pretty tough conditions messing around with cars and bikes and backpacking and whatever else. They held up super well and I was very pleased with the fit, comfort, and durability. Just recently, the old pants developed a wear area in one of the seams, and I reached out to Iron and Resin to see about it. They promptly got back to me, and sent me a new pair of pants under warranty at no charge! It's refreshing to see a company stand behind their product and back it up with their actions. Customer for life here!"

— Quinn V. (5/5)

"these are high quality, heavy duty pants. way overpriced for a product made in pakistan though."

— Tom (3/5)

"Awesome pants."

— Anthony (5/5)

Perfect build!

"Perfect build!"

— Marc M. (5/5)

"One of the best union style work pants ive had very tough not easy to rip perfect fit."

— Mitchell (5/5)

Solid, stylish.

"My favorite non-denim pant. Perfect fit, love the look."

— Bob D. (5/5)

High Quality

"Burly pants nice fit - not too tight/not too baggy just what was I looking for"

— Dane H. (5/5)

Q&A

where are these made? It doesnt state like it does with your enduro denim
Hey there, thanks for reaching out our Union Work Pants are currently made in our Pakistan production HQ!