Hermes Online Shop – Style Guide

Hermès Sandal Sizing: Everything You Need to Know

Finding the correct size in a set of Hermès sandals is more consequential than in most other footwear categories. Because Hermès uses high-density, structured hide, a sandal that is half a size below your correct fit will not stretch in the way that softer, cheaper leather might. On the other hand, a sandal that is oversized will slip, compress the material awkwardly, and age inconsistently. The conditioning period that makes Hermès sandals progressively more comfortable depends on the right initial size — the leather adapts to your personal foot anatomy within its appropriate size.

This guide covers the complete sizing picture for Hermès sandals: how Hermès sizing works relative to other systems, the how the Oran and Izmir each fit, how to measure your foot correctly, and what to do when you are between sizes. It also addresses some specific scenarios — various foot anatomies and material variations.

Understanding the Hermès Sizing System

Hermès sandals use European (Paris) sizing, which runs in full and half sizes. This is a measurement system tracking foot length in Paris units — one Paris point is about 6.67mm. The Hermès sandal sizing generally extends from EU 34 through EU 42. European sizing correlates to other systems as follows: EU 37 = US Women’s 7 = UK 4; EU 38 = US Women’s 7.5–8 = UK 5; EU 39 = US Women’s 8.5–9 = UK https://www.oransandals.com/product-category/shoes/men-shoes/ 6; EU 40 = US Women’s 9–9.5 = UK 6.5. These conversions are approximate and assume a medium width.

One important nuance of Hermès sizing is that it differs modestly between models. The Oran and Izmir are made on different lasts, and the same EU size may fit slightly differently in each. A significant number of wearers find that their size in the Izmir versus the Oran differs by one half-size, even in the same European size. This is not a quality issue — it is a result of different construction forms.

Oran-Specific Sizing: Specific Guidance

The Hermès Oran usually runs true to EU size for feet of standard width. For a first purchase without the ability to try in a boutique, the safest approach is to begin with your correct EU number based on foot length measurement. If your foot is on the boundary between sizes, sizing up by half a size is typically the better choice, because the leather cannot stretch into a larger length but will adapt to a slightly roomy fit during the wear-in period.

For wide feet — specifically, for feet that are significantly wider than average for their length — the sizing approach changes. The H-cutout vamp has a fixed width at any given size, and a quite broad foot can feel restricted by it. Sizing up by half a full size could create more width in the upper. The cost is a marginally elongated fit, which can make the heel strap feel loose even when set at maximum tension. Some buyers with wider feet resolve this through minor cobbler work to the strap.

Sizing the Hermès Izmir: Specific Guidance

The Izmir’s closed-back design introduces a different fitting situation than the Oran. Because the heel is closed and non-adjustable, the fit across the heel and back of the foot is determined entirely by the size selection. For standard heel dimensions, the Izmir matches EU sizing consistently — the leather wraps snugly around the heel without tightening or slipping off. For narrow heels, going down one half-size could give a more stable feel. For broad heels, going a half-size larger provides more heel space.

The Izmir’s softening process means the back leather molding to the exact heel shape, which takes 5–10 wears in Epsom leather. If the enclosed back feels acutely uncomfortable rather than simply firm, it is sensible to check the sizing — true discomfort, rather than the expected firmness of new leather, may indicate that the size is incorrect.

How to Measure Your Foot: The Correct Method

The best method to identify the right Hermès size if you cannot visit a store is to measure your foot precisely and check against the Hermès size guide. To get the right measurement: stand on a piece of paper with your full weight on the foot, align the paper to the wall and press your heel against it, and mark the end of your longest toe with a writing instrument. Calculate the distance from wall to mark in millimetres — this is your foot length. Check your measurement against the Hermès chart. According to sizing experts at The RealReal, accurate foot measuring is the best indicator of size satisfaction and return rates.