The S03 is inspired by our former Olympic design. Meant to be taken anywhere, over every terrain, the S03 comes with a special Vibram sole that guarantees long-lasting stability and comfort.
Designed and handcrafted with care in Portugal.
|Foot Size||EU||UK||US Women||US Men|
Size Guide - S03 Sky
Fits true to size. Please select the size you normally wear.
Stand against a wall with socks with your foot on a sheet of paper that is propped up against the wall. Draw a line in front of the tip of the longest toe. Measure the distance in centimeters from the edge of the sheet to the line and then refer to the conversion chart.
If you have any questions, please email us at email@example.com. We are glad to help.
Shipping & Returns
Next business day shipping.
DHL/UPS Shipping with tracking number provided.
Free Shipping in the UK, US & EU, free exchanges and easy returns up to 30 days.
IMPORTANT: United Kingdom - Import duties and VAT included in checkout. Import Duties may be due for other countries outside the UK & EU.
Click here to learn more
Incredible shoes, great quality and awesome look!
Sneakers are beautiful and very confortable
Nice shoe, as I can tell so far.
I'm not usually one for leaving negative reviews. But I thought I should gave a true account of my overall experience with my first purchase of JAK shoes.
Ordering = 5stars - website did not have my size (EU42) as available. Contacted customer services. Miguel was really helpful and organized a pair of 42's to be shipped directly from store.
Shoe Quality = 4star - Initial impression is the quality looks to be good.
Shoe Fit = 2stars - This is the one I struggled with a little. I have been what I regard as a regular (UK8 EU42) all my adult life, and have not had many issues with size 42 shoe fitment over the years. As for the JAK S03's fit, when first tried on they immediately seemed small fitting and not really comfortable. swapped the insoles out for the provided thinner insoles (nice touch by the way) and this improved the fit for me. However the the shoe fit still felt very narrow and was tight across the width (length is fine). This is not something I can remember being an issue with the numerous different manufacturer shoes I have bought over there years. I love the look of the S03 trainers so I'm going to keep them and hope they stretch and give a little across the width.
Delivery = 2stars - Again this is my experience having to import from Portugal to the UK after Brexit. Delivery time was great, so no issue there. However the import cost were a lot more than I expected. I appreciate this has nothing to do with JAK but its still worth pointing out, so people are aware of the overall cost of shipping to UK. After Euro to GPB conversion, purchase price of S03's was £167 but after adding all duty, tax and import costs of £75, the actual total cost for me was £242. That is and increase of 45% to get shoes shipped to UK, which for me is to much. Again no fault of JAK, but it will prevent me personally from buying shoes from JAK again.
This is my 3rd pair of JAKs, also owning the SO1 and Royal. The S03 are perfect for walking around in. When they first arrived,, I thought they felt tight, I did use the thinner inserts, but after 1 day of walking around they stretched into a better, yet still snug fit - so if you prefer the thicker inserts maybe order 1 size up.
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