Size Guide
UK Footwear Size Guide
Use this table as a general guide. Fit can vary slightly by brand and style. Product-specific guidance takes priority where shown.
| UK size | EU size | US size | Foot length |
|---|---|---|---|
| 3 | 36 | 5 | 22.0 cm |
| 3.5 | 36.5 | 5.5 | 22.5 cm |
| 4 | 37 | 6 | 23.0 cm |
| 4.5 | 37.5 | 6.5 | 23.5 cm |
| 5 | 38 | 7 | 24.0 cm |
| 5.5 | 38.5 | 7.5 | 24.5 cm |
| 6 | 39 | 8 | 25.0 cm |
| 6.5 | 40 | 8.5 | 25.5 cm |
| 7 | 40.5 | 9 | 26.0 cm |
| 7.5 | 41 | 9.5 | 26.5 cm |
| 8 | 42 | 10 | 27.0 cm |
| 8.5 | 42.5 | 10.5 | 27.5 cm |
| 9 | 43 | 11 | 28.0 cm |
| 9.5 | 43.5 | 11.5 | 28.5 cm |
| 10 | 44 | 12 | 29.0 cm |
| 10.5 | 44.5 | 12.5 | 29.5 cm |
How to measure
- Measure at the end of the day while wearing the type of socks you expect to use.
- Stand on paper with your heel against a wall.
- Mark the tip of the longest toe and measure from the wall.
- Measure both feet and use the longer measurement.
Between sizes?
Choose the smaller size for a closer fit or the larger size for a more relaxed fit. For wide feet, consider the larger option where available.
Wrong size?
Eligible UK size exchanges and returns are free. Email contact@magiels.com before returning an item.
On Running Cloudswift Amp Women's Running Shoes
The Cloudswift Amp combines On's advanced CloudTec® cushioning with a sleek, everyday design built for speed — whether you're training hard or simply getting from A to B in style. Lightweight, responsive, and beautifully designed.
Key Features
- CloudTec® sole with 17 individual cloud elements for impact absorption and energy return
- Speedboard® technology for propulsive toe-off
- Lightweight engineered mesh upper in ivory spoke colourway
- Seamless Fit construction reduces irritation on long runs
- Versatile enough for daily training and travel
Built for Every Pace
The Cloudswift Amp is the On Running shoe for women who want serious performance technology without sacrificing style. Equally at home on a 10K or a long city walk. The ivory colourway is clean and versatile — pairs beautifully with activewear and casual outfits alike.
Material: Engineered mesh upper | CloudTec® foam outsole
Fit: True to size — order your usual UK size
Enjoy free delivery across the UK with no minimum spend. Orders are processed within 1–2 business days and delivered within 5–7 business days. We’ll email you a tracking number as soon as your order has been dispatched.
Shop with confidence. If your purchase isn’t right for you, you can return it free of charge within 30 days of delivery and request a refund. Once your return has been received and inspected, the refund will be issued to your original payment method.
