Keen Uneek Sandals

The KEEN Men's Uneek Sandal in Black is one of the most recognisable open-toe sandals on the market, built around a patented two-cord construction that moves with your foot rather than against it. Where traditional sandals rely on fixed straps, the Uneek uses a polyester braided cord with a reinforced nylon core to create a free-moving upper that adjusts to the natural shape of your foot as you walk. The result is a sandal that feels broken in from the first wear. Paired with a flexible rubber outsole and a cushioned PU midsole, this all-black colourway works just as well on a seafront walk as it does on a rocky shoreline or a summer festival site.

Key Features

• Two-cord upper construction: Polyester braided cord with a nylon core provides strength and flexibility, with infinite points of adjustability so the sandal conforms precisely to your foot shape.
• Secure fit lace capture system: The lace-lock mechanism lets you dial in your preferred fit quickly and keeps the cord securely in place throughout the day.
• Recycled P.E.T. cords: The cords are made from post-consumer recycled plastic bottles, reducing material waste without compromising on durability or performance.
• Cleansport NXT odour control: A pesticide-free, natural odour-control treatment is built into the footbed, keeping the sandal fresher for longer across extended wear.
• Microfibre footbed cover: A soft microfibre lining sits underfoot and against the heel for added comfort against the skin, reducing friction on bare feet.
• Razor-siped rubber outsole: Shallow siping cuts across the outsole tread to channel water away from the contact point, improving grip on wet surfaces such as rocks, boat decks and poolside tiles.
• PU midsole: A polyurethane midsole provides all-day cushioning underfoot, absorbing impact on hard or uneven terrain.
• PFAS free: KEEN has manufactured without PFAS chemicals since 2018, making the Uneek a cleaner choice for both the wearer and the environment.
• Colourway: Black / Black, a clean, versatile finish that pairs easily with shorts, lightweight trousers or casual summer outfits.

At Urban Industry We Recommend the KEEN Uneek For

• Coastal and beach walks where wet conditions are likely and quick-dry performance matters.
• Summer travel, city breaks and warm-weather holidays where you want one sandal that transitions between activities.
• Festival and outdoor event use, where comfort across long days on your feet is the priority.
• Water-based activities such as kayaking, paddleboarding and rock pooling, thanks to the water-ready outsole and fast-drying cords.
• Everyday warm-weather footwear for those who want something more considered than a standard flip-flop but more open than a closed-toe trainer.
• Conscious shoppers who prioritise brands with strong sustainability credentials, including recycled materials and chemical-free manufacturing.

We have been big fans of the Uneek range here at Urban Industry since we first started stocking KEEN. You can read more about how we tested and photographed the KEEN Uneek Sandals across different terrains on our journal, including sand, pebbles and seaweed-covered rocks.

Our Style, Fit and Sizing Recommendations

• True to size: The KEEN Uneek fits true to size for the majority of wearers. However, here at the store we recommend sizing up if you are between sizes or if you have a wider foot, as the cord upper can feel slightly snug when the lace lock is tightened on a broader foot.
• Foot width: The sandal is best suited to medium-width feet. Those with narrower ankles may find the fixed ankle strap slightly looser than expected, as it is not independently adjustable.
• Break-in period: The free-moving cord construction adapts quickly to the shape of your foot. You may need a couple of wears to find your preferred lace-lock setting, but once dialled in, it holds well throughout the day.
• No toe box pressure: The open construction means there is no pressure on top of the toes, making these a solid option for those who find enclosed footwear uncomfortable in warm weather.
• Wear with: Relaxed shorts, lightweight chinos, swim shorts or casual linen trousers all work well with the clean black colourway.

Washing and Care Instructions

• Rinse the sandals thoroughly with clean, fresh water after any saltwater or heavily muddy use to prevent material degradation in the cords and outsole.
• Hand wash only using a mild soap or specialist footwear cleaner and a soft brush on the outsole and cord areas.
• Do not machine wash, tumble dry or expose to direct prolonged heat sources, as this can distort the cord structure and midsole.
• Air dry naturally at room temperature away from direct sunlight, which can cause the black colourway to fade over time.
• Store in a cool, dry place when not in use. Avoid leaving them compressed under heavy objects, which can permanently deform the midsole.
• If the lace-lock mechanism becomes stiff, a small amount of silicone lubricant applied carefully can restore smooth operation.

KEEN Men's Uneek Black/Black - Our FAQs

1. What makes the KEEN Uneek different from a standard sandal?
   Rather than fixed straps, the Uneek uses a free-moving two-cord construction that actively conforms to the shape of your foot. This gives it a more adaptable, personalised fit than most sandals at this price point.
2. Are the KEEN Uneek sandals suitable for water use?
   Yes. The rubber outsole with razor siping is designed to grip on wet surfaces, the cords dry quickly after water exposure, and the overall construction is built to handle the kind of conditions you encounter by the coast, on a boat or around water generally.
3. Do the KEEN Uneek sandals run true to size?
   Generally yes, they run true to size. If you are between sizes or have a wider foot, we would suggest sizing up for a more comfortable fit once the lace-lock is tightened.
4. What is Cleansport NXT and does it actually work?
   Cleansport NXT is a natural, pesticide-free odour-control treatment applied to the footbed. It uses beneficial microbes to break down the bacteria that cause odour, and it performs consistently well across extended daily wear.
5. Are the KEEN Uneek sandals sustainable?
   Yes, meaningfully so. The cords are made from recycled P.E.T. plastic bottles, the sandal is manufactured entirely without PFAS chemicals, and KEEN has a documented track record of environmental and social responsibility. You can find out more in our article on the history of KEEN Footwear.
6. Can I wear the KEEN Uneek for light hiking or trails?
   The Uneek is best suited to coastal paths, easy terrain and casual outdoor use. It is not designed for technical trails, significant elevation or rough off-road conditions, where a closed-toe hiking sandal or boot would be more appropriate.
7. How do I adjust the fit of the KEEN Uneek?
   The fit is adjusted using the lace-lock system, which tightens or loosens the cord upper. Excess cord can be tucked under the bottom loop on the outsole to keep things neat. It takes a short time to find your preferred setting, but once set it stays put reliably.
8. Is the ankle strap adjustable on the KEEN Uneek?
   No, the ankle strap on the standard Uneek is fixed rather than independently adjustable. For most wearers this is not an issue, but those with particularly narrow ankles may prefer to try before buying or check sizing reviews before ordering.

Why Buy KEEN from Urban Industry

• Established independent retailer since 2002: Urban Industry has been a trusted, independently owned UK footwear and clothing destination for over two decades, with real buying expertise behind every brand and product we stock.
• Excellent customer rating across 20,000+ reviews: We hold an Excellent rating across Trustpilot, Google and Judge.me, earned from more than 20,000 genuine customer reviews. That track record matters when you are buying online.
• A curated, considered selection: We do not stock everything. We are committed to finding the best quality menswear and footwear brands available, so the range you browse at Urban Industry represents a thoughtful edit each season rather than a wholesale catalogue.
• KEEN specialists: We have been stocking and testing KEEN footwear since 2018 and know the range well. Whether you need sizing advice or want to understand which model best suits your use, our team is well placed to help.