Size Guide
SHOES
We are currently using Asian/European sizing for our footwear. To find your best fit, follow these steps:
-
Measure your foot
Place the back of your foot against a wall on level ground. Then measure the distance from point A to B.
The distance between A and B is the length of your feet. -
Select your size
Refer to the size conversion chart below and select the size closest to the length of your feet.
| Size | ASIA / EU | US | UK / IN | JP / MX | KR / CN | Length of Foot (CM) |
|---|---|---|---|---|---|---|
| S | 34 | 4 | 1 | 22 | 220 | 21.7 |
| 35 | 5 | 2 | 22.5 | 225 | 22.3 | |
| M | 36 | 6 | 3 | 23 | 230 | 23 |
| 37 | 7 | 4 | 23.5 | 235 | 23.7 | |
| L | 38 | 8 | 5 | 24.5 | 245 | 24.3 |
| 39 | 9 | 6 | 25 | 250 | 25 | |
| XL | 40 | 10 | 7 | 25.5 | 255 | 25.7 |
| 41 | 11 | 8 | 26 | 260 | 26.3 | |
| 2XL | 42 | 12 | 9 | 27 | 270 | 26.9 |
| 43 | 13 | 10 | 27.5 | 275 | 27.5 |
- CHARLES & KEITH uses Asian/European size for its footwear collection.
- If both sides of your feet are different in length, we recommend you select a shoe size based on the longer side.
- The current recommended size chart does not include half size recommendations. We suggest you select the shoe size based on the length closest to your feet measurement.
- Please note, foot length is not equivalent to shoe length.
- Shoe comfort is dependent on a combination of factors such as size, design/cutting and heel height. For example, shoes that are of the same size, but are different in design/cutting, may not give you the same level of comfort.
- These are recommended guidelines to get you the best possible fit for CHARLES & KEITH footwear collections only.
BELTS
| TYPE | SIZE | WAIST |
|---|---|---|
| HIGH WAIST | S | 65cm/25.63" |
| M | 75cm/29.5" | |
| L | 85cm/33.5" | |
| MID WAIST | S | 70cm/27.5" |
| M | 80cm/31.5" | |
| L | 90cm/35.38" | |
| LOW WAIST | S | 80cm/31.5" |
| M | 90cm/33.38" | |
| L | 100cm/39.38" |
- This size chart is based on the belt type and can vary when worn at a higher or lower level.
- The size of a belt indicates the measurement from the buckle prong (or other methods of closure) to the middle hole of the belt.
- These are the recommended guidelines to get you the best possible fit for CHARLES & KEITH belt collections only.
Duo Metallic Chain-Handle Two-Way Backpack - Silver
(Includes Duties & Taxes for Express Shipping)
Personalise With
Editor's Note
You do not have to sacrifice functionality to make a statement with this Duo backpack. Featuring a casually elevated silhouette, the slouchy shape is balanced out by elegant quilting and ruching. With a high-shine metallic finish that makes it a statement piece, this carrier will stand out everywhere you go. Coming with two different strap options, you can choose between using it as a backpack, or attaching the chain-strap to carry it by your side.
Product Details & Care Instructions
Taking care of your CHARLES & KEITH products will help you get the most out of them. Visit our Product Care page for more information.
Promotions
Enjoy Free Standard Delivery with min. purchase.
Shipping & Returns
Items from our collaborative collections are not eligible for return or exchange.
Due to the closure of our warehouse during the Lunar New Year festivities, please expect a delay of up to 7 working days for orders placed after 12 February 2026.
Express Delivery: 3 - 5 working days*
Please note that expected delivery date may vary based on the product's warehouse location. Find out more on the Shopping Bag page and the Checkout page (under the Item Details tab).
Find out more about our Returns & Exchanges
Style Inspiration
Personalise With
Editor's Note
You do not have to sacrifice functionality to make a statement with this Duo backpack. Featuring a casually elevated silhouette, the slouchy shape is balanced out by elegant quilting and ruching. With a high-shine metallic finish that makes it a statement piece, this carrier will stand out everywhere you go. Coming with two different strap options, you can choose between using it as a backpack, or attaching the chain-strap to carry it by your side.
Product Details & Care Instructions
Taking care of your CHARLES & KEITH products will help you get the most out of them. Visit our Product Care page for more information.
Promotions
Enjoy Free Standard Delivery with min. purchase.
Shipping & Returns
Items from our collaborative collections are not eligible for return or exchange.
Due to the closure of our warehouse during the Lunar New Year festivities, please expect a delay of up to 7 working days for orders placed after 12 February 2026.
Express Delivery: 3 - 5 working days*
Please note that expected delivery date may vary based on the product's warehouse location. Find out more on the Shopping Bag page and the Checkout page (under the Item Details tab).
Find out more about our Returns & Exchanges