Edgy Fashion for the Daring – Hermes Sandals

Hermès Sandal Sizing: Everything You Need to Know

Choosing the proper size in a Hermès sandal purchase is more important than in many other types of footwear. Because Hermès uses high-density, structured hide, a sandal that is even half a size too small will will not expand in the way that a thinner or cheaper hide would. On the other hand, a sandal that is too big will slip, bunch the leather in unflattering ways, and deteriorate asymmetrically. The leather softening process that transforms Hermès sandals from firm to perfectly fitting depends on the right initial size — the leather molds to your individual foot shape within its correct size.

This guide covers the complete sizing picture for Hermès sandals: Hermès size equivalents in other systems, the how the Oran and Izmir each fit, the correct foot measurement method, and what to do when you are between sizes. It also addresses some specific scenarios — wide footwidth, narrow heel fit, leather-specific differences.

Understanding the Hermès Sizing System

Hermès sandals use the European sizing system, which runs in full and half sizes. This is a foot-length-based system using Paris point units — one Paris point is about 6.67mm. The Hermès size range for sandals generally extends from EU 34 through EU 42. hermes EU sizes convert 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 6; EU 40 = US Women’s 9–9.5 = UK 6.5. These translations are general approximations and work best for standard foot widths.

One significant detail of Hermès sizing is that it changes somewhat across designs. The Oran and Izmir are constructed on different shoe forms, and the same numerical size may vary in each. Many buyers report that their Izmir size and their Oran size differ by half a size, even in the same numerical size. This is not a quality issue — it is a result of different construction forms.

How to Size the Oran: Specific Guidance

The Hermès Oran usually runs true to EU size for medium-width feet. For a purchase made without in-person fitting, the safest approach is to use your actual European size based on foot length measurement. If your measurement sits between two Hermès 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 feet wider than average — particularly for feet substantially wider than the norm — the size selection logic adjusts. The H-cutout vamp has a fixed width at any given size, and a significantly wide foot may be limited by it. Choosing the next half-size up could create more width in the upper. The downside is a slightly longer sandal, which can cause the back strap to feel insufficiently taut even when set to its snuggest position. Some buyers with wider feet resolve this through minor cobbler work to the strap.

Izmir-Specific Sizing: Specific Guidance

The Izmir’s enclosed back creates a slightly different sizing dynamic than the Oran. Because the back is permanent rather than variable, the fit across the heel and back of the foot is determined entirely by the size selection. For typical heel breadth, the Izmir fits true to size — the leather fits closely around the back without pinching and without slipping. For slim heel bones, sizing down by half a size may provide a more secure fit. For wide heels, going a half-size larger provides more heel space.

The how the Izmir conforms over time means the back leather molding to the exact heel shape, which takes 5–10 wears in Epsom leather. If the sealed back creates significant discomfort rather than simply firm, it is worth reassessing the size — genuine acute discomfort, rather than the typical tightness of unworn calfskin, could suggest incorrect sizing.

Accurate Foot Measurement: Getting the Right Measurement

The most dependable approach to identify the right Hermès size if you cannot visit a store is to measure your foot accurately and match to the official Hermès size chart. To measure correctly: stand on a piece of paper with your full weight on the foot, place the paper against a wall with your heel touching the wall, and indicate the furthest point of your longest toe with a pencil or pen. Calculate the distance from wall to mark in millimetres — this is your foot length. Match your foot length to the published Hermès sizing guide. According to sizing experts at The RealReal, foot measurement is the single most reliable predictor of fit success for online purchases.