• The MX Sandal - Black Calf by Margaux features black leather slides with open toes, brown insoles, low heels, stylish cut-out details, and white edge stitching.
  • The MX Sandal - Black Calf by Margaux features a black leather H-shaped double strap, an open toe, and a brown sole, displayed on a plain light background.
  • The MX Sandal - Black Calf by Margaux features black leather slides with tan insoles and the Margaux logo in gold on the heel, shown against a light beige background.
  • Two Margaux The MX Sandal - Black Calf slip-ons are shown: one displays the crisscross leather top, while the other is flipped to reveal its tan sole.
  • A close-up of Margaux’s The MX Sandal - Black Calf, showcasing two wide crisscrossed black leather straps with white stitching, a square toe, and a tan insole.

The MX Sandal

 
 
 
 

Combining luxe leather with impeccable craftsmanship, our signature sandal takes an elevated approach to everyday dressing.

Color: Black Calf
Core
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Size: | Select A Size

Length: Length is true-to-size.
Select Width

Width: Runs slightly narrow. We recommend sizing up in width.

| Medium
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  • Calf leather with leather lining
  • Structured, supportive straps are perfectly placed
  • A subtly square toe adds a modern touch
  • 5 mm of plush foam padding
  • Subtle variations in color and texture are part of the natural character of our materials, making each pair unique.
  • Handmade in Spain

We recommend starting with your typical US shoe size. We've found The MX Sandal in calf fits a bit narrower through the front straps than many of our other sandals. If you're between sizes, we'd suggest choosing the larger size. If you're between widths or know you prefer additional room through the front straps, we'd recommend sizing up in width.

Crafted in soft calf leather, this style should feel comfortably snug right out of the box. The leather will gradually soften and mold to your foot with wear. If you prefer a little more give or a slightly roomier feel through the front straps, we'd recommend this style in suede.

  • Medium: A standard width throughout (comparable to a B width)
  • Narrow: A slimmer fit throughout (comparable to an A width)
  • Wide: A roomier fit at the ball of the foot (comparable to a BC-BD width

US 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 8.5-9 9 9.5 9.5-10 10 10.5 11 11.5 12 12.5 13 13.5 14
EUR 33 33.5 34 34.5 35 35.5 36 36.5 37 37.5 38 38.5 39 39.5 40 40.5 41 41.5 42 42.5 43 43.5 44 44.5 45

Still unsure? Contact Us

Since calf leather is porous and absorbs water easily, avoid getting them wet. Getting the shoes soaking wet can irrevocably stain the leather, but if they just get a bit wet, stuffing the toe area with clean, un-dyed paper or cloth and letting them dry naturally, without heat, can help them to recover.

Most quality shoe repair shops will offer products to polish, protect, and refresh the leather's surface. A neutral cream polish—one without color—will also help protect the surface from scuffs and scrapes and keep the leather hydrated. If something's spilled on the leather, try using a soft cloth with a small amount of cleanser or cream on it. Rub the surface in a circular motion, then allow the shoe to dry before buffing the entire thing lightly with a dry, clean cloth.

Shipping:

  • Holiday Shipping Cutoffs: For more details, click here. 
  • U.S. orders receive free standard shipping over $150 ($4.95 shipping under $150).
  • Standard shipping rates apply to international orders and are calculated at checkout. 
  • For more details, check out our Shipping FAQs.

Returns & Exchanges:

  • Extended Holiday Return Window: Orders placed between Nov 15–Dec 31, 2026 can be returned or exchanged through Jan 15, 2027, or within the standard window, whichever is later (U.S. and Canada).
  • U.S. orders may be returned for a refund within 14 days of delivery, or exchanged or returned for store credit within 30 days.
  • Canadian orders may be returned for a refund within 14 days of delivery, or exchanged within 30 days.
  • International orders (outside the U.S. and Canada) are final sale and not eligible for return or exchange, except as required by applicable law.
  • Items marked Final Sale are not eligible for return or exchange.
  • For more details, check out our Returns & Exchanges FAQs.

The MX Sandal - Black Calf

 
 
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Size Guide

We recommend starting with your typical US shoe size. We've found The MX Sandal in calf fits a bit narrower through the front straps than many of our other sandals. If you're between sizes, we'd suggest choosing the larger size. If you're between widths or know you prefer additional room through the front straps, we'd recommend sizing up in width.

Crafted in soft calf leather, this style should feel comfortably snug right out of the box. The leather will gradually soften and mold to your foot with wear. If you prefer a little more give or a slightly roomier feel through the front straps, we'd recommend this style in suede.

US 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 8.5-9 9 9.5 9.5-10 10 10.5 11 11.5 12 12.5 13 13.5 14
EUR 33.5 34 34.5 35 35.5 36 36.5 37 37.5 38 38.5 39 39.5 40 40.5 41 41.5 42 42.5 43 43.5 44 44.5 45
What are our widths?
  • Medium A standard width throughout (comparable to a B width)
  • Narrow A slimmer fit throughout (comparable to an A width)
  • Wide A roomier fit at the ball of the foot (comparable to a BC-BD width)
Contact Us
5 Star Reviews
"Adore these sandals. The color is gorgeous. The leather is soft. The soles are padded."
Vanessa N.

Nothing says SUMMER like the perfect SLIDE

Building upon bestselling styles from our archive, we worked closely with the artisans at our factory in Spain on the patternwork of this easy, effortless silhouette. The signature interlocking design born from those efforts is architectural, subtly feminine, and of course, comfortable—a combination that's inherently Margaux.

Overall rating: 4.7831326 / 5 from 166 reviews.

AI Generated Review Summary

The MX Sandal - Black Calf features a perfect fit, high-quality craftsmanship, and a versatile style. The sandals are made from luxurious leather that is soft and comfortable, though opinions on sizing vary. The color and overall quality are highly praised.

Summary topics

  • Overall Quality (7%): Customers loved the high quality of the sandals, which was mentioned multiple times in the reviews.
  • Fit Accuracy (22%): Many customers expressed satisfaction with the fit, stating that it was perfect and accurate to size.
  • Sandal Color (9%): Customers appreciated the beautiful color of the sandals, with multiple reviews mentioning how rich and beautiful they are.
  • Foot Comfort (6%): Opinions vary, but these sandals fit my narrow foot perfectly and are super comfortable.
  • Size Variability (13%): Customers have mixed opinions about the size, with some finding it true to size and others recommending sizing up.

Review topics: ["size","fit","color","pair","length","look","quality","sandals","material","style","comfort","shoes","leather","craftsmanship","padding","slides","width","weather","details","foot","narrows","feet","process","margaux","staff","wear","need","cushion","dresses","break"].

Review highlights

  • "Love my new sandals, the color and crocodile leather are absolutely gorgeous." — Marlene P.
  • "It is a snug, narrow fit, (I am hoping it will stretch a bit with wear) and a beautiful sandal and color." — Amy A.
  • "I have a bit of a wider toe box and found the wide size to fit perfectly." — Annisa P.

Reviews

Instant Classic

"Took a while to get the right size but these are absolutely beautiful. I usually wear a size 7 but opted for a 7.5. I think I would have been fine with the 7... the more important aspect was the width. I've never considered myself having a wide foot but that is the size that worked for me. These will get a lot of use!"

— Whitney K. (5/5)

Great looking sandal!

"The sandals are relatively comfortable. There were a few inside areas I had to cover with moleskin because the sandal was rubbing. I do have narrow boney feet however, so this happens with this style of sandal. I wish your narrow was a AA not A."

— Debera M. (4/5)

They're ok

"I've been searching for a quality pair of leather slides to jump into and go out the door. I ordered 7. 5 since my usual size 7 was sold out. The length is fine. They were tight to begin with, but after a few wears, they slide on easily. Unfortunately, they are not good for any amount of walking. They are uncomfortable and after wearing a couple times I don't love how this style and color look on me. I'm sorry to say I regret spending so much on these."

— Kim Y. (3/5)

Beautiful sandals! So happy!

"No regrets! Beautiful sandals. I usually wear a 9 or 9. 5. I ordered size 40 and they fit perfectly. Definitely fill a gap in my closet - they go with everything and make each outfit look polished. They are quickly becoming a go-to for every outfit!"

— Stacy P. (5/5)

Refined comfort

"I just love these sandals. They look so refined and are very comfortable. The color and top stitching are beautiful."

— Susan C. (5/5)

Love this!

"Feels really high quality and great transitional fall season sandal."

— Erin G. (5/5)

Absolutely love these sandals. I

"Absolutely love these sandals. I bought them for my vacation in Paris and they were stylish and comfortable. Would definitely recommend. I am typically a 8. 5 medium with in most all brands and I would say I have medium with feet but ordered these in a 39. 5M based on some reviews and they were perfect. Definitely needed to size up for the length. They are worth the investment in my opinion for a quality shoe that is comfortable and will last. I would definitely repurchase and I’d highly recommend!"

— Michelle P. (5/5)

Beautiful shoes

"These shoes are beautiful and can match multiple outfits. The only downside is that they can be a bit uncomfortable if wearing them for extended periods of time. I also wish they had more of the narrow in stock, but they are consistently out of these. Narrow would have been a much better fit and would have justified the high cost a bit more."

— Jeffrey B. (4/5)

Beautiful - thanks for making narrow width!

"So, it took me awhile to get the right size and fit, but it was worth it. I have a narrow foot and am a true 7 but often size down to a 6. 5 in sandals because of width. I did need to get these in a 6. 5N as the 7N was a bit long and not as snug as I wanted. They are a beautiful shoe and really elevate outfits. Super comfortable too."

— Dena J. (5/5)

Not a good fit

"I ordered my normal size and it was a bit too short. I went up a size, and while it was longer, the length was solely in the front of the shoe (after the straps) when I needed it in the back. I wore them out of the house and within a block realized my mistake. It's almost impossible to walk in them and keep them on my foot. I don't think of my foot as being oddly shaped, so am disappointed in these (and that I wore them and can't return; don't imagine I'll wear unless I'm driving)."

— Hannah L. (3/5)

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