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

$90.00 $72.00
Winter Escape Sale: Save 20%
Plus, free ground shipping

  • Style #1018709
  • 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!

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.

  • Will purchase again.

    5

    Very comfortable. My second pair. Haven't begun to wear the first pair out.

    undisclosed

    With improvement I'd buy again

    3

    The paint on the shoes comes off easily. But get constantly get complements otherwise. If the paint stayed on I'd give them 5 stars. The paint chips makes them a bit of an eyesore.

    undisclosed

    Most Comfortable Sandals Ever

    5

    I love all three pairs of my Keen Uneek O2's. They are so comfortable and stylish. I wear them nearly every day from May through September. They are the most comfortable sandals I've ever worn.

    undisclosed

    One problem

    3

    I wore them once. I regret throwing away the box because I would have returned them for another pair. The string on the right shoe is too far apart and my small toe sticks out. Maybe it is just this one pair. However I will never know. For this reason I cannot wear them. I am very disappointed

    undisclosed

    From hiking to office casual they look and feel great!

    5

    I am constantly receiving compliments for these sandals. They are comfortable and very airy yet protective with the sneaker wrap around style. Very easy to put on and to tighten in place with the draw string. I love these Keen sandals. The color makes them easily fit into most dress situations from hiking to office casual.

    undisclosed

    I recommend

    5

    I purchased for my husband as a gift. He initially didn't like the looks - then he tried them on and now they are his favorite shoe- light weight, airy,good foot bed. The size was true and color great

    undisclosed

    yes i'm going to order 2 more pair

    4

    been wearing them quite a lot Thought I ordered them 1/2 size larger I really need 11 1/2

    undisclosed

    Amazing sandal!

    5

    Was skeptical at first but I am so glad I bought these Uneek 02's! Very lite weight and comfortable and stylish as well. Best pair of sandals I have ever owned....also own the black color.....highly recommend!

    undisclosed

    Love the shoes

    5

    Very stylish,extremely comfortable

    undisclosed

    Not bad, just different.

    2

    I had to return these, as they run small. Not a fan of the different footbed compared to the original UNEEK. Could just be that I love the originals.

    undisclosed

    M-UNEEK-O2

    4.7 57

    100.0

     

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

– Edward Abbey
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