Hartley & Grey
Zara Orthoflex Slip-Ons
Zara Orthoflex Slip-Ons
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✓ Free UK delivery ✓ 60-day returns ✓ Free size swaps
Effortless Comfort. Everyday Style.
Sleek, breathable, and made for movement—the Zara™ Orthoflex Slip-Ons are your go-to shoes for all-day wear. With targeted arch support, adaptive airflow, and a flexible fit, they keep you comfortable from your morning walk to your evening plans. Lightweight yet durable, they adapt naturally to your stride while keeping you stable on any surface.
Why You’ll Love Zara™
✔ Contoured cushioning – Ergonomic support that reduces foot fatigue.
✔ Ventilated knit upper – Keeps your feet cool with adaptive airflow.
✔ All-terrain rubber outsole – Confident grip on city streets, trails, or indoors.
✔ Lightweight & flexible – Moves naturally with every step.
✔ Streamlined silhouette – Easy slip-on design that complements any casual look.
Size Chart
| US | UK | EU | Feet Length (cm) |
|---|---|---|---|
| 4 | 1.5 | 34 | 22.0 |
| 5 | 2.5 | 35 | 22.5 |
| 6 | 3.5 | 36 | 23.0 |
| 7 | 4.5 | 37 | 23.5 |
| 8 | 5.5 | 38 | 24.0 |
| 9 | 6.0 | 39 | 24.5 |
| 10 | 6.5 | 40 | 25.0 |
| 11 | 7.0 | 41 | 25.5 |
| 12 | 7.5 | 42 | 26.0 |
| 13 | 8.0 | 43 | 26.5 |
Delivery & Returns
Delivery & Returns
Free UK delivery on every order — dispatched within 1–2 working days, fully tracked. You have 60 days to return your pair for a full refund, and wrong-size swaps are always free.
Size & Fit
Size & Fit
Standard UK sizing. Between sizes? Choose the larger size for a relaxed orthopaedic fit. Use the Size guide link above the basket button for foot-length measurements — and remember, size swaps are free.
Our 60-Day Promise
Our 60-Day Promise
Wear them, walk in them, live in them. If your Hartley & Grey pair doesn't win you over within 60 days, we'll refund you in full — no quibbles.
Size Guide
All our footwear uses standard UK sizing. If you're between sizes, or you prefer a relaxed orthopaedic fit, we recommend choosing the larger size.
Women's shoe size conversion
| UK | EU | US | Foot length (cm) |
|---|---|---|---|
| 3 | 36 | 5 | 22.5 |
| 4 | 37 | 6 | 23.5 |
| 5 | 38 | 7 | 24.1 |
| 6 | 39 | 8 | 25.1 |
| 7 | 40 | 9 | 25.9 |
| 8 | 41 | 10 | 26.7 |
| 9 | 42 | 11 | 27.6 |
How to measure your feet
- Stand on a sheet of paper at the end of the day (feet swell slightly by evening).
- Mark the tip of your longest toe and the back of your heel, then measure the distance in centimetres.
- Measure both feet and use the larger measurement.
Still unsure? Remember: wrong-size swaps are free — order your best guess and we'll sort the rest.
