Find your perfect fit. Use our measuring guide to match your foot measurements with our size chart.
How to Measure Your Foot
Stand on a piece of paper and trace your foot outline. Measure from the back of your heel to the tip of your longest toe. Always measure both feet and use the larger measurement.
Feet swell slightly throughout the day, so measure later in the day. Wear socks you plan to use with your flats for most accurate results.
US Women’s Size
EU
UK
Foot Length (in)
Foot Length (cm)
5
35
2.5
8.5"
21.6 cm
5.5
36
3
8.75"
22.2 cm
6
36.5
3.5
8.875"
22.5 cm
6.5
37
4
9.06"
23.0 cm
7
37.5
4.5
9.25"
23.5 cm
7.5
38
5
9.375"
23.8 cm
8
38.5
5.5
9.56"
24.3 cm
8.5
39
6
9.75"
24.8 cm
9
40
6.5
9.875"
25.1 cm
9.5
40.5
7
10.06"
25.5 cm
10
41
7.5
10.25"
26.0 cm
10.5
42
8
10.4"
26.4 cm
11
42.5
8.5
10.56"
26.8 cm
Fit Tips
Our flats feature plush cushioned insoles. If you fall between two sizes, pick the larger one for greater comfort.
The soft insole will gradually shape to your foot after a few wears.
For wide feet, we recommend sizing up for a relaxed fit.
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The Sunbird in suede nails that quiet-luxury vibe—subtle, chic, and sneakily supportive. It’s the kind of slide that finishes off a linen look, layers with loungewear, or dresses up airport athleisure. The magic? Birdies’ foot-hugging insole that delivers softness with every step. For easy days and elevated fits, this one never misses.
The Sunbird in suede nails that quiet-luxury vibe—subtle, chic, and sneakily supportive. It’s the kind of slide that finishes off a linen look, layers with loungewear, or dresses up airport athleisure. The magic? Birdies’ foot-hugging insole that delivers softness with every step. For easy days and elevated fits, this one never misses.
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