Use this chart to find your size conversion.

US Size UK EU JP CM
LENGTH
7 6 39.5 25 24.4
7.5 6.5 40 25.5 24.8
8 7 40.5 26 25.4
8.5 7.5 41 26.5 25.7
9 8 42 27 26
9.5 8.5 42.5 27.5 26.7
10 9 43 28 27
10.5 9.5 44 28.5 27.3
11 10 44.5 29 27.9
11.5 10.5 45 29.5 28.3
12 11 46 30 28.6
13 12 47 31 29.4
14 13 47.5 32 30.2
15 14 48 33 31
16 15 48.5 34 31.8
17 16 49 35 32.6
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Men's UNEEK O2

$100.00 $89.99

  • Fit Tip: This style is running a 1/2 size small. We suggest ordering a 1/2 size larger than your usual size! Size Guide
Please choose a size! Please choose an inseam!

Innovative two-cord construction adapts effortlessly to the foot, creating a customized fit and a free-moving feel. A lightly cushioned heel-back adds soft support, and an updated sole makes it ultralight.

  • Cleansport NXT™ for natural odor control
  • Free moving cord junctions allow for upper to adjust to foot
  • Secure fit lace capture system

We know shoes get dirty! We recommend hand washing these with cold water and a mild soap. To remove excess dirt or spot clean, use a stiff brush or soft cloth. Do not machine wash. Allow to air dry away from heat.

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Chat with a KEEN Expert for style advice and fit recommendations.

Sandal in the front, sneaker in the back.

  • Innovative two-cord construction adapts effortlessly to the foot, creating a customized fit and a free-moving feel. A lightly cushioned heel-back adds soft support, and an updated sole makes it ultralight.
  • Metatomical Footbed Design
    This internal support mechanism is anatomically engineered to provide excellent arch support and cradle the natural contours of the foot.
  • Cleansport NXT™ for natural odor control
  • Free moving cord junctions allow for upper to adjust to foot
  • Secure fit lace capture system
Material
  • Lightweight EVA midsole
  • Fully enclosed heel with soft, quick-dry lining
  • Metatomical EVA footbed
Care

We know shoes get dirty! We recommend hand washing these with cold water and a mild soap. To remove excess dirt or spot clean, use a stiff brush or soft cloth. Do not machine wash. Allow to air dry away from heat.

  • Need 1/2 sizes beyond the 11...

    4

    I wear a size 12 shoe and you recommend ordering up a 1/2 size in this type shoe, hahaaaa, there is no 1/2 size, so I have to order the next, whole, size up. Its frustrating to see this choice but took it anyway and ordered the 13, they`re a bit too big, as you would expect, doable but not the killer fit you hope. Still like them alot and wanted to see if the 12`s would be too small and ordered a pair of those also. And as expected they`re a bit on the small size, again they`re doable but you really do need to offer the 1/2 size option for us that have a larger foot to fit than the 11,,,,, please....

    Cocoa Beach, Florida

    true

    Most comfortable shoe I've owned

    5

    Bought my first pair the year they came out. Easily the most comfortable shoe I've ever worn. The cushioning is amazing for my 300 lb. frame. My only regret is that I live where I can only wear them five months a year.

    Great Lakes

    true

    Awesome buy

    5

    I work in the Virgin Islands. I bought these shoes for island life. 2 years and two category five hurricane's later they're still awesome. That is why I am back for another pair. My first pair I still ware daily and just want more color options. Great shoes, great products. Thanks KEENS!! Keep up the great work

    St Croix USVI

    true

    Withouit a doubt

    5

    I presently have five pairs of U Neek 02,they bare bthe most comfortable shoes I have ever worn,I live in Florida so I have the weather on my side , U Neek's are the only shoes I wear. I have recommended U Neeks to about 20 people who see me wear them. I know for a fact 10 people have piurchased them and love them. Please do not stop producing this brand. I Love them.

    Naples Florida

    true

    Great "anytime" shoe

    5

    Great fit and very comfortable. Love the color choices

    undisclosed

    Comfortable and Stylish Mix Between Shoes and Sandals

    5

    Extremely comfortable. Great for light hiking, casual wear, and day-to-day use. Love these shoes!

    Portland, OR

    true

    need black soles

    4

    If these had black soles I could wear them at work, that would be fantastic.

    Undisclosed

    Nice Shodal

    4

    I love my O2's I just wish they had dark soles.....

    Undisclosed

    Not enough arch support

    4

    If I had "normal" feet, I have kept these in a heartbeat. They are SO COMFORTABLE right out of the box. However, I have foot issues that require me to have a pretty good arch support. Most of my other Keens (I have MANY) have that, but these tend to be considerably flatter. Was hoping my orthotics would work in these, but the shoe was not deep enough. This is a very different design for Keen, but it's worth keeping around because of its comfort...and also cool look. I got red. Sad to be sending them back. Thank you for your wonderful customer service, Keen!

    Undisclosed

    Unique Style - Exceptional Comfort

    5

    I just bought my second pair of Uneek 02s after having the first pair for just two weeks. It didn't take long wearing them for me to become an enthusiastic believer in this awesome shoe. These are high tech shoes that provide exceptional comfort, a stable, supportive footbed, and best of all coolness throughout the day. I followed the recommendation for sizing up one half size and found that fit to be correct. I usually only wear Ecco, New Balance, etc. but those high quality shoes now seem to pale in comparison to the very lightweight and extremely breathable Keen Uneek 02s. Treat yourself to a pair, you won't regret it.

    Undisclosed

    M-UNEEK-O2

    4.7 22

    100.0

     
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