Use this chart to find your conversion, or switch tabs above
to our fit guide to find your recommended fit.

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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CALIFORNIA WILDFIRE RELIEF

Help Northern California communities devastated by fire,
and KEEN will match your donation up to $25,000. Double your impact today!

Image courtesy of The California National Guard

Men's UNEEK O2

$90.00

  • Style #1017936
  • Fit Tip: This style is running a 1/2 size small. We suggest ordering a 1/2 size larger than your usual size! Fit Guide
Please choose a size!

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.

Live Chat

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.

  • REVIEW SNAPSHOT®

    by PowerReviews
    KEENMen's UNEEK O2
     
    4.7

    (based on 17 reviews)

    Ratings Distribution

    • 5 Stars

       

      (12)

    • 4 Stars

       

      (5)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    Reviewed by 17 customers

    Displaying reviews 1-5

    Back to top

    Previous | Next »

     
    5.0

    SO COMFORTABLE AND GREAT SUPPORT

    By 

    from Norton Shores, MI

    Comments about Men's UNEEK O2:

    I bought my MEN'S UNEEK O2 in May (2017) and short of of my work shoes, they've been on my feet all summer. My wife walked the downtown and waterfront areas of Chicago racking up 27 miles from Friday around noon until Sunday noon. My feet did not hurt one bit and they don't sweat much compared to my other KEEN sandals. I would highly recommend these sandals. Also, I get a lot of people asking me where I got them and are suprised to hear they are KEENS.

    (6 of 8 customers found this review helpful)

     
    4.0

    need black soles

    By 

    from Undisclosed

    Site Member

    Comments about KEEN Men's UNEEK O2:

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

    (0 of 4 customers found this review helpful)

     
    4.0

    Nice Shodal

    By 

    from Undisclosed

    Site Member

    Comments about KEEN Men's UNEEK O2:

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

    (7 of 7 customers found this review helpful)

     
    4.0

    Not enough arch support

    By 

    from Undisclosed

    Site Member

    Comments about KEEN Men's UNEEK O2:

    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!

    (3 of 3 customers found this review helpful)

     
    5.0

    Unique Style - Exceptional Comfort

    By 

    from Undisclosed

    Site Member

    Comments about KEEN Men's UNEEK O2:

    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.

    Displaying reviews 1-5

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    Previous | Next »

     

Wilderness is not a luxury
but necessity of the human spirit.

– Edward Abbey

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