Prepare Your Feet
Measure your feet at the end of the day, when they are naturally at their largest. Wear the socks you plan to wear with the shoes.
Size Guide
SHOEWI
Select Women or Men, then compare your usual shoe size or foot measurement with our international size conversion guide.
International shoe size conversion
| UK | EU | US | Foot Length |
|---|---|---|---|
| 2.5 | 35.5 | 4.5 | 22.1 cm |
| 3 | 36 | 5 | 22.5 cm |
| 3.5 | 36.5 | 5.5 | 22.9 cm |
| 4 | 37 | 6 | 23.3 cm |
| 4.5 | 37.5 | 6.5 | 23.8 cm |
| 5 | 38 | 7 | 24.2 cm |
| 5.5 | 38.5 | 7.5 | 24.6 cm |
| 6 | 39 | 8 | 25 cm |
| 6.5 | 40 | 8.5 | 25.5 cm |
| 7 | 40.5 | 9 | 25.9 cm |
| 7.5 | 41 | 9.5 | 26.3 cm |
| 8 | 42 | 10 | 26.7 cm |
| 8.5 | 42.5 | 10.5 | 27.1 cm |
| 9 | 43 | 11 | 27.6 cm |
| 9.5 | 44 | 11.5 | 28 cm |
| 10 | 44.5 | 12 | 28.4 cm |
| 10.5 | 45 | 12.5 | 28.8 cm |
International shoe size conversion
| UK | EU | US | Foot Length |
|---|---|---|---|
| 2.5 | 35.5 | 3.5 | 22.1 cm |
| 3 | 36 | 4 | 22.5 cm |
| 3.5 | 36.5 | 4.5 | 22.9 cm |
| 4 | 37 | 5 | 23.3 cm |
| 4.5 | 37.5 | 5.5 | 23.8 cm |
| 5 | 38 | 6 | 24.2 cm |
| 5.5 | 38.5 | 6.5 | 24.6 cm |
| 6 | 39 | 7 | 25 cm |
| 6.5 | 40 | 7.5 | 25.5 cm |
| 7 | 40.5 | 8 | 25.9 cm |
| 7.5 | 41 | 8.5 | 26.3 cm |
| 8 | 42 | 9 | 26.7 cm |
| 8.5 | 42.5 | 9.5 | 27.1 cm |
| 9 | 43 | 10 | 27.6 cm |
| 9.5 | 44 | 10.5 | 28 cm |
| 10 | 44.5 | 11 | 28.4 cm |
| 10.5 | 45 | 11.5 | 28.8 cm |
Follow these steps for the most accurate fit
Measure your feet at the end of the day, when they are naturally at their largest. Wear the socks you plan to wear with the shoes.
Place a sheet of paper against a wall. Stand on it with your heel lightly touching the wall and your weight evenly distributed.
Mark the end of your longest toe. Measure the distance from the wall-side edge of the paper to the mark in centimetres.
One foot may be slightly larger. Use the measurement of your larger foot when selecting your size.
Helpful advice before selecting your size
Choose the larger size for additional comfort and natural foot movement.
Consider choosing the larger size, especially for narrow, structured or pointed footwear.
Allow additional room when wearing thicker socks or supportive insoles.
Your toes and heel should sit comfortably inside the sole without extending over the edges.
The Cloudmonster 3 Wide delivers On Running's maximum cushioning platform in a wider fit — engineered for runners who need more room across the forefoot without sacrificing energy return or forward momentum.
Finding a wide-fit running shoe that performs at the highest level is rare — the Cloudmonster 3 Wide solves that. Whether you have naturally wider feet or simply prefer more room when running, this is the shoe that won't compromise on comfort or performance.
Material: Engineered mesh upper | CloudTec® Helion™ foam sole
Fit: Wide fit — designed for wider feet or those preferring more room
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.
Share your experience with @shoewi and inspire our community.
I love this product and highly recommend it.
Outstanding quality and fast delivery!
Absolutely love it! Will buy again.
Perfect fit and style!
Best purchase ever!
Exceeded my expectations!
So happy with this purchase!
Highly recommend to everyone!