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Sizing Help
These Narrow Fit Birkenstocks are designed for those with a slimmer foot and are usually more suitable to Ladies but will fit Men alike.
Size on Birkenstocks is in EU to help really dial in the right footbed so if you need any help with which size or footbed, or you are not sure if you need narrow or regular please see our size guide below
Product Description
- Adjustable metallic buckle for a personalised fit
- Contoured cork footbed for ultimate comfort
- Durable outsole for reliable traction on any surface
Step into summer with the Birkenstock Madrid Big Buckle Narrow Slider Sandals in classic black. Designed for women who appreciate both style and comfort, these sandals feature a single wide strap adorned with a striking gold-toned adjustable buckle, allowing you to customise the fit to your liking. The sleek black nubuck leather upper not only looks chic but also provides a soft touch against your skin.
Experience the luxury of the anatomically shaped cork-latex footbed that conforms to the natural shape of your foot, offering exceptional arch support and cushioning. The suede footbed lining adds an extra layer of softness, making every step feel like walking on clouds. Whether you're strolling along the beach or enjoying a casual day out, these sandals ensure your feet stay comfortable and supported.
The open-toe design promotes breathability, keeping your feet cool and fresh, while the textured outsole delivers stability and grip on various surfaces. Perfect for those sunny days, the Birkenstock Madrid Big Buckle Sandals are not just footwear; they are an invitation to embrace fun and adventure. Elevate your summer wardrobe with these stylish sandals and enjoy the perfect blend of comfort and elegance that only Birkenstock can provide.
Free Delivery & Returns
Free Delivery & Returns
We want to make getting your new purchase as easy as possible, so we offer multiple delivery options from trusted UK firms. Check out our options here.
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Birkenstock


Birkenstock stands for excellent comfort, high functionality and extraordinary quality. Birkenstock create products like “Arizona” that make the lives of their customers easier and better. Birkenstock invented the footbed and has also shaped the meaning of the term “footbed”, which is so common today.
Size Guide
When sizing Birkenstock sandals, it’s important to consider both length and width for a comfortable fit. Start by measuring your foot length from heel to toe, then compare it to the Birkenstock size chart provided to select the right size. Birkenstock sandals are known to run occasionally slightly larger, so you may need to size down if you’re between sizes.
In terms of width, Birkenstock offers two fit options: narrow and regular. Narrow fit is designed for those with slimmer feet, while the regular fit suits average to wider feet. To determine which width is best for you, look at the footbed icon inside the sandal. A solid footprint indicates a regular fit, while an outlined footprint represents a narrow fit. It's essential that your foot fits comfortably within the contours of the footbed, with no part of your foot hanging over the edges. This ensures optimal support and comfort.
How To Read Birkenstock Footbed

1. Width Symbol: there are two footbed - narrow and regular. Regular width symbol is an open foot and Narrow width symbol is a filled-in footprint as shown above.
2. Size: The big number is the EU Birkenstock size. The above footbed shows a "Size 38".
3. Leather or Vegan Symbol: These change depending on the model. A green logo and letter indicates Vegan Friendly and Blue is for there Soft Footbed
Size Chart
| Euro Size | UK Size | Length (mm) | Width (mm) |
|---|---|---|---|
| 36 | 3.5 | 226 - 230mm | 83 - 86mm |
| 37 | 4.5 | 231 - 240mm | 84 - 89mm |
| 38 | 5 | 241 - 245mm | 86 - 91mm |
| 39 | 5.5 | 246 - 250mm | 88 - 93mm |
| 40 | 7 | 251 - 260mm | 90 - 95mm |
| 41 | 7.5 | 261 - 265mm | 91 - 96mm |
| 42 | 8 | 266 - 270mm | 93 - 97mm |
| 43 | 9 | 271 - 280mm | 95 - 100mm |
| 44 | 9.5 | 281 - 285mm | 97 - 102mm |
| 45 | 10.5 | 286 - 290mm | 99 - 104mm |
| 46 | 11.5 | 291 - 300mm | 101 - 106mm |
| 47 | 12 | 301 - 305mm | 103 - 108mm |
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