For Those Who Dare – Hermes

Getting the Right Size: Why It Matters More Than You Think

Choosing the proper size in a set of Hermès sandals is more significant than in many other types of footwear. Because Hermès uses full-weight, firm calfskin, a sandal that is even half a size too small will not stretch in the way that less substantial leather could. Equally, a sandal that is too big will slip, fold and crease unattractively, and age inconsistently. The conditioning period that makes Hermès sandals progressively more comfortable assumes a correct starting size — the leather molds to your individual foot shape within its right size.

This article covers every sizing consideration for Hermès sandals: Hermès size equivalents in other systems, the fit details specific to each main style, accurate foot measuring technique, and guidance for half-size ambiguity. It also addresses some specific scenarios — wide footwidth, narrow heel fit, leather-specific differences.

How Hermès Sizes Work

Hermès sandals use Paris point 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 size options in the Hermès sandal range 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 6; EU 40 = US Women’s 9–9.5 = UK 6.5. These conversions are approximate and assume a medium width.

One key distinction of Hermès sizing is that it changes somewhat across designs. The Oran and Izmir are built on different foot-shaped frames, and the same numerical size may vary in each. A significant number of wearers find hermes that their size in the Izmir versus the Oran differs by one half-size, even in the same numerical size. This is not a manufacturing inconsistency — it is a result of different construction forms.

Sizing the Hermès Oran: Key Sizing Rules

The Hermès Oran usually runs true to EU size for feet of standard width. For a remote buy without a try-on, the wisest option is to use your actual European size 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 Oran’s hide cannot expand to fit a longer foot 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 sizing approach changes. The H-cutout vamp has a fixed width at any given size, and a very wide foot may feel constrained by it. Choosing the next half-size up can provide additional room across the vamp. The cost is a marginally elongated fit, which can result in a slightly slack slingback strap even when adjusted to its tightest setting. Some owners with broad feet fix this with minor professional adjustment to the strap.

Izmir-Specific Sizing: Key Izmir Sizing Rules

The Izmir’s sealed heel produces a distinct sizing need than the Oran. Because the heel is closed and non-adjustable, the how the sandal sits on the back of the heel is completely defined by the size chosen. For average heel widths, the Izmir runs true — the leather fits closely around the back without pinching and without slipping. For narrow heels, 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 break-in process for the Izmir means the back leather molding to the exact heel shape, which needs five to ten uses in standard calfskin. If the closed heel causes real pain rather than merely stiff and new, it is sensible to check the sizing — genuine acute discomfort, rather than the normal stiffness of new hide, might signal the wrong size was chosen.

How to Measure Your Foot: Getting the Right Measurement

The best method to find your correct Hermès fitting if you cannot visit a store is to take an accurate foot measurement and compare against Hermès’s published size chart. To get the right measurement: stand on a piece of paper with your full weight on the foot, put the paper against a wall and position your heel to the wall, and mark the end of your longest toe with a marker. Count the millimetres from the wall edge to the mark — this distance equals your foot length. Compare your measured foot length to the Hermès size chart. According to sizing experts at The RealReal, foot measurement is the single most reliable predictor of fit success for online purchases.

EU Size	US Women’s (approx.)	UK (approx.)	Foot Length (mm)
36	6	3	225–230
37	7	4	231–237
38	7.5–8	5	238–243
39	8.5	6	244–250
40	9–9.5	6.5	251–256
41	10	7.5	257–263
42	11	8	264–270