Size 15 Flip-Flops for Men: Where to Buy in the UK
Quick answer: Gumbies and Walktall were the only shops listing men’s flip-flops in UK 15 when we checked. Gumbies’ own store lists its Islander, Cairns and Corker at 15, with some Islander colours sold out, and Walktall listed mostly Gumbies Islander and Vegovert, plus Reef’s Santa Ana and a Birkenstock Ramses toe-post in EU 49, which Birkenstock labels UK 14. If a slide will do, adidas, Nike, JD Sports and Sports Direct list several at 15. We did not check Amazon UK’s listings.
We may earn a commission if you buy through some links on this page, at no extra cost to you. How we earn.
- Shops with flip-flops at 152 (Gumbies, Walktall)
- Gumbies' EU label49 (50 on some Islander colours)
- Walktall's EU and USEU 50, US 16
- Reef at 15Santa Ana (Walktall)
Fifteen is where Gumbies stops being one option among many and becomes almost everything we found: most of Walktall’s flip-flops at this size are Gumbies too. Apart from Gumbies, we found only Reef’s Santa Ana and a Birkenstock toe-post, which is a relabelled size. Gumbies’ own labels add a twist, with two different EU sizes on the same UK 15.
We checked each shop’s own website on 30 October 2026: Walktall’s size 15 filter page and store data, with flip-flops picked out by name; Gumbies’ store product data; and the flip-flop and slider filters at the other shops. Walktall’s returns terms come from its own pages as shown in search results. We did not check prices. We did not check Amazon UK’s listings.
Where to buy size 15 flip-flops
| Shop | Flip-flop sizes listed (UK) | 15.5 | Widths at 15 | Delivery and returns | Link |
|---|---|---|---|---|---|
| GumbiesIslander, Cairns, Corker | 13 to 16 (15 labelled EU 49, some EU 50) | No | Not checked | £2.95 delivery, free over £50; returns within 30 days, unused and in original packaging, but you pay return postage and delivery is not refunded. | See Gumbies |
| WalktallReef Santa Ana | 13 to 16 | No |
| Returns within 14 days, unworn and boxed; you pay return postage (as shown in search results). Delivery cost not checked. | See Walktall |
| Amazon UK | Not checked | Not checked | Not checked | Set by each seller; most items returnable within 30 days, free only if marked Free Returns (otherwise the cost may be deducted); shoes must go back in an intact shoebox inside an outer box. | See Amazon UK |
“Not checked” means we did not record that detail for this guide. Walktall’s widths are those its store data showed at 15; its G fittings at 15 are mostly Gumbies flip-flops. Delivery and returns are the standard UK terms on 30 October 2026.
The two shops in more detail
Gumbies
At 15, Gumbies' own UK store lists the Islander, Cairns and Corker flip-flops, labelled UK15 EU49, with a second UK15 EU50 option on some Islander colours. When we checked, a good share of Islander colours were in stock at 15 and some were sold out. Its Strider slider was also in stock at 15. Delivery is £2.95, free over £50. Returns within 30 days must be unused and in the original packaging, and you pay the return postage; delivery is not refunded.
- Flip-flop sizes
- UK 13 to 16
- At 15
- Islander, Cairns, Corker
- Delivery
- £2.95, free over £50
- Returns
- 30 days, at your cost
Walktall
Walktall's flip-flops at 15 were mostly Gumbies Islander and Vegovert when we checked, plus Reef's Santa Ana and a Birkenstock Ramses toe-post, which is Birkenstock's EU 49. Reef's Fanning and Cushion Phantom and the Archies stop at 14. The size 15 page also shows sandals and slides, and there is no 15.5. As shown in search results, returns are accepted within 14 days if unworn and boxed, and you pay the return postage.
- Flip-flop sizes
- UK 13 to 16
- At 15
- Gumbies, Reef Santa Ana, Birkenstock (EU 49)
- 15.5
- No
- Delivery
- Not checked
- Returns
- 14 days; you pay return postage
Amazon UK
We did not check Amazon UK's listings at size 15. Whether you find a flip-flop in 15 depends on the brand and seller; Walktall's table puts a UK 15 at US 16, which helps if a listing uses US sizes. Most items can be returned within 30 days, but only items marked Free Returns are free to send back; otherwise the cost may be deducted.
- Sizes
- Not checked
- Widths
- Not checked
- Delivery
- Set by each seller
- Returns
- Usually 30 days
Two EU labels on a Gumbies 15
Gumbies labels its UK 15 as EU 49, but some Islander colours also have a second UK 15 option labelled EU 50, which is the EU label Gumbies gives its UK 16. Walktall’s table puts a UK 15 at EU 50. If you order an Islander in 15, check which option you are choosing, and go by your foot length.
Birkenstock and Walktall’s labels
Walktall’s Birkenstock Ramses toe-post at 15 is EU 49, because Walktall labels Birkenstock one size higher than Birkenstock does at EU 48 and 49; Birkenstock’s own site calls EU 49 a UK 14 and lists no toe-post at that size. Walktall’s fitting note says Birkenstocks fit large for size and are resized on arrival.
Slides at 15
Slides are not flip-flops, but more shops list them at 15. When we checked:
- adidas: its sliders filter at 15 showed the adilette, Purechill, Island Club Adilette 22, Adilette Comfort and Adilette 00s, with 15 available on each one we checked. See adidas sliders in 15.
- Nike: the Victori One, Calm 2.0, Calm mule and Jordan Future mule.
- JD Sports: Nike’s Victori One and Calm 2.0, and adidas Adilette, Adimule, Adissage 360rec, Adilette 00s, Purechill and Adilette Comfort styles. See JD Sports in 15.
- Sports Direct: Nike Victori Shower, adidas Adissage and Yeezy Slide. See Sports Direct in 15.
- Gumbies and Walktall: Gumbies’ Strider slider, and at Walktall the Strider and Duke Clothing’s Drake.
Decathlon’s flip-flops filter at 15 also showed adidas slides, but only from marketplace sellers. Our size 15 sandals guide covers sandals at this size.
Where flip-flops stop below 15
- At 13 or 13.5: Next, Mountain Warehouse, Havaianas (45/46), Sports Direct, Birkenstock and Jacamo (13.5).
- Havaianas at 14/15: its chart lists 47/48 as UK 14/15, but that size showed only as unavailable on one product page.
- At 12: Crocs, FitFlop, Schuh and the Flip Flop Shop.
How to measure your feet for size 15 flip-flops
Neither shop gave us a foot length for 15. Walktall’s table gives EU 50 and US 16, and Gumbies labels its 15 as EU 49, or EU 50 on some Islander colours. For a figure to measure against, Jacamo’s and JD Williams’ general men’s footwear guides give 323 mm for a UK 15. Slide labels differ again: Nike’s slides at Sports Direct put a UK 15 at EU 50.5, and adidas’ Purechill on Decathlon at EU 51.
- Stand barefoot on a sheet of paper, heel against a wall.
- Mark the end of your longest toe and measure from the wall in millimetres.
- Do both feet and use the longer measurement.
Widths at size 15
At 15, Walktall’s store data showed its G fitting, which it calls Wider Than Standard, mostly on Gumbies flip-flops. We did not check widths at Gumbies’ own store.
UK 15 flip-flops in EU and US sizes
| Brand or shop | EU | US | Foot length |
|---|---|---|---|
| Walktall | 50 | 16 | Not given |
| Gumbies | 49, or 50 on some Islander colours (its labels) | Not checked | Not checked |
| Birkenstock at Walktall | 49 (Birkenstock calls it UK 14) | Not given | Not given |
| Jacamo and JD Williams (general guides) | 51 | 16 | 323 mm |
Our picks for size 15
We pick from the facts in the table, not from prices or reviews, which we have not checked.
- The Gumbies Islander: listed at both shops at 15, though some colours were sold out at Gumbies.
- Reef: the Reef Santa Ana at Walktall, the only Reef flip-flop we found at 15.
- More time to return: Gumbies gives 30 days to Walktall’s 14, though you pay the return postage at both.
More size 15 guides
Frequently asked questions
Where can I buy size 15 flip-flops?
Gumbies' own UK store, which lists its Islander, Cairns and Corker at 15, and Walktall, which listed mostly Gumbies plus Reef's Santa Ana and a Birkenstock Ramses toe-post in EU 49 when we checked. We did not check Amazon UK.
Why does a Gumbies Islander have two size 15 options?
Gumbies labels most UK 15s as EU 49, but some Islander colours also have a UK 15 option labelled EU 50. Check which one you pick and go by your foot length.
Is Walktall's Birkenstock toe-post a true size 15?
It is EU 49, which Birkenstock's own site labels UK 14. Walktall says Birkenstocks fit large for size and resizes them.
Are there Havaianas in size 15?
Its chart lists 47/48 as UK 14/15, but we saw that size only as unavailable on one product page, and its men's filters stop at 45/46.
Which slides come in size 15?
When we checked, adidas listed the adilette, Purechill and other Adilette styles at 15, Nike the Victori One, Calm 2.0, Calm mule and Jordan Future mule, and JD Sports and Sports Direct a mix of Nike and adidas slides.
All shop details were checked on the shops’ own websites on 30 October 2026. Walktall’s returns terms come from its own pages as shown in search results. We did not check Amazon UK’s listings.
Other sizes: size 14 flip-flops, size 16 flip-flops, or the full large flip-flops for men guide.