Use this chart to find your conversion, or switch tabs above
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US Size
UK
EU
JP
CM LENGTH
5
2.5
35
22
21.6
5.5
3
35.5
22.5
22.2
6
3.5
36
23
22.5
6.5
4
37
23.5
23
7
4.5
37.5
24
23.5
7.5
5
38
24.5
23.8
8
5.5
38.5
25
24.1
8.5
6
39
25.5
24.6
9
6.5
39.5
26
25.1
9.5
7
40
26.5
25.4
10
7.5
40.5
27
25.9
10.5
8
41
27.5
26.2
11
8.5
42
28
26.7
12
9
43
29
27.6
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Women's UNEEK O2

$90.00
FREE Tote With Any $75+ Purchase
Today Only!

  • Style #1016915
  • 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
    KEENWomen's UNEEK O2
     
    4.7

    (based on 10 reviews)

    Ratings Distribution

    • 5 Stars

       

      (9)

    • 4 Stars

       

      (0)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (1)

    • 1 Stars

       

      (0)

    Most Liked Positive Review

     

    GREAT

    I have previously worn the 01 uneek shoes with mixed feelings, so-so on comfort and a show stopper when I get a piece of little gravel inside. Seems walking at least for me kicks...Read complete review

    I have previously worn the 01 uneek shoes with mixed feelings, so-so on comfort and a show stopper when I get a piece of little gravel inside. Seems walking at least for me kicks up the gravel and small bits sometimes get inside.

    ANYWAY the updated one there is no such problem. I live in Bermuda and on an island there is a lot of sand. I am frequently in the salt water with my dogs and these shoes are the best so far. really easy to slip on and very comfortable. When I walk in the water I can easily swish the sand out, they are easy to swim with and then walk home after. I love them!

    VS

    Most Liked Negative Review

     

    I have several styles of

    I have several styles of Keen shoes, sandals, and boots, and I wear them constantly -- all favorites; but this style didn't work for me. I really wanted it to work because...Read complete review

    I have several styles of Keen shoes, sandals, and boots, and I wear them constantly -- all favorites; but this style didn't work for me. I really wanted it to work because it would be a perfect summer shoe, but there were too many problems. They run a bit short as advertised, but that wasn't the fit issue; this shoe is just very tight (has a continuous closed "sock" at the opening) and doesn't have any give (for flat feet, it may be okay). The shoes also seemed to have very little arch support in the sole and at the same time had that support on the outer edge of the sole (opposite of the arch), causing the foot to sag inward such that the shoes rubbed on the inner side of the heel -- in just a few steps I could feel blisters forming. A larger size would've been too long and resulted in more slippage/rubbing. Usually I won't rate low just for fit, but these fit issues are so weird.

    Reviewed by 10 customers

    Displaying reviews 1-5

    Back to top

    Previous | Next »

    (1 of 1 customers found this review helpful)

     
    5.0

    Great Shoes

    By 

    from Chicago, IL

    Comments about KEEN Women's UNEEK O2:

    Love these shoes. I was able to wear my usual size. I have ordered the leather slingbacks. I prefer colors that do not have a white outsole.

    • Was this a gift?:
    • No

    (4 of 4 customers found this review helpful)

     
    5.0

    Super comfortable!

    By 

    from Undisclosed

    Site Member

    Comments about KEEN Women's UNEEK O2:

    Thank you, thank you for making this style for adults! I bought the kids' version for my daughters and the original Uneek for myself last year. I love the original Uneek, but these shoes hands down are the most comfortable shoes I have ever bought from Keen. I did order a half size up as recommended and they fit perfectly. They are light, sporty, and come in a lot of fun colors. Definitely recommend!

    (5 of 5 customers found this review helpful)

     
    2.0

    I have several styles of

    By 

    from Undisclosed

    Site Member

    Comments about KEEN Women's UNEEK O2:

    I have several styles of Keen shoes, sandals, and boots, and I wear them constantly -- all favorites; but this style didn't work for me. I really wanted it to work because it would be a perfect summer shoe, but there were too many problems. They run a bit short as advertised, but that wasn't the fit issue; this shoe is just very tight (has a continuous closed "sock" at the opening) and doesn't have any give (for flat feet, it may be okay). The shoes also seemed to have very little arch support in the sole and at the same time had that support on the outer edge of the sole (opposite of the arch), causing the foot to sag inward such that the shoes rubbed on the inner side of the heel -- in just a few steps I could feel blisters forming. A larger size would've been too long and resulted in more slippage/rubbing. Usually I won't rate low just for fit, but these fit issues are so weird.

    (3 of 3 customers found this review helpful)

     
    5.0

    I purchased a pair of the

    By 

    from Undisclosed

    Site Member

    Comments about KEEN Women's UNEEK O2:

    I purchased a pair of these shoes for a trip to the National Parks in Utah and Arizona. I had a broken toe that was on the mend, but still presented problems for me when I put on a regular pair of hiking shoes. These shoes were perfect! I wore them everyday as we hiked through the canyons. They gripped the surface when we walked across "slippery rocks" and provided comfort and support for my feet. No, I would not recommend for a serious hiker as they do not have the ankle support, and they do allow sand to enter into the shoe. However, I was able to shake the sand out easily, and I never hiked into the back country. I stayed on the trails. I ordered a size larger (9) rather than an 8 1/2 as recommended. My only complaint - I didn't order another color.

    (5 of 5 customers found this review helpful)

     
    5.0

    GREAT

    By 

    from Undisclosed

    Site Member

    Comments about KEEN Women's UNEEK O2:

    I have previously worn the 01 uneek shoes with mixed feelings, so-so on comfort and a show stopper when I get a piece of little gravel inside. Seems walking at least for me kicks up the gravel and small bits sometimes get inside.

    ANYWAY the updated one there is no such problem. I live in Bermuda and on an island there is a lot of sand. I am frequently in the salt water with my dogs and these shoes are the best so far. really easy to slip on and very comfortable. When I walk in the water I can easily swish the sand out, they are easy to swim with and then walk home after. I love them!

    Displaying reviews 1-5

    Back to top

    Previous | Next »

     

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

– Edward Abbey

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