Use this chart to find your size conversion.

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

  • Style #1018723
  • 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.

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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.

  • REVIEW SNAPSHOT®

    by PowerReviews
    KEENWomen's UNEEK O2
     
    4.8

    (based on 40 reviews)

    Ratings Distribution

    • 5 Stars

       

      (36)

    • 4 Stars

       

      (2)

    • 3 Stars

       

      (1)

    • 2 Stars

       

      (1)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    No Pros

    Cons

    No Cons

    Best Uses

    No Best Uses
      • Was this a gift?:
      • No (9)

    Reviewed by 40 customers

    Displaying reviews 1-10

    Back to top

    Previous | Next »

     
    5.0

    Great shoes for Maui!

    By 

    from undisclosed

    Verified Buyer

    Comments about KEEN Women's UNEEK O2:

    Love these shoes! Great for walking on Lava rocks in Maui. Very satisfied with my order.

     
    5.0

    Great feel

    By 

    from undisclosed

    Verified Buyer

    Comments about KEEN Women's UNEEK O2:

    Glad I got them. Will be a great summer shoe.

    (1 of 1 customers found this review helpful)

     
    5.0

    Spring/Summer casual sandal/shoe.

    By 

    from undisclosed

    Verified Buyer

    Comments about KEEN Women's UNEEK O2:

    These are a great summer shoe. I like that they are closed toes. I am not fond of of open toe shoes. Casual for late spring and wear.

    (2 of 2 customers found this review helpful)

     
    5.0

    Superb shoe! Comfy, cute, practical!

    By 

    from undisclosed

    Verified Buyer

    Comments about KEEN Women's UNEEK O2:

    I've worn these shoes three times since purchase: 2 for short term running errands and just now for an hour's walk with the dog. They are SOOOO comfortable and the air flow that passes through the front of the shoe is incredible. When it's warm and I have full tennis shoes on, my feet get so hot with socks. I can see these being a superb choice for warmer days when I need full support. Planning to take them on a summer vacay with lots of walking and casual biking. Already thinking about the color of my next pair. And yes, half side up is th way to go. I'm normally a 6.5 and the 7 is great.

     
    5.0

    Great. Would like to have this in a golf shoe!

    By 

    from undisclosed

    Verified Buyer

    Comments about KEEN Women's UNEEK O2:

    Love the color and so comfortable. Would be even better if there was a golf shoe option—perfect for golf if there were rubber cleats

    (0 of 1 customers found this review helpful)

     
    5.0

    I would.

    By 

    from undisclosed

    Verified Buyer

    Comments about Women's UNEEK O2:

    this is my third pair love them. Bought a pair for my son (25 yrs. old- and thought he would like them) - he didn't even try them on - didn't like the look.

    (1 of 1 customers found this review helpful)

     
    5.0

    Keens for Disney!

    By 

    from undisclosed

    Verified Buyer

    Comments about Women's UNEEK O2:

    Although these were not approved by Keen for orthotic use, I nevertheless wore my custom orthotics in these shoes at Disney World. They were great walking shoes for the 10 mile days we spent at Disney (as were another pair of Keens that I wore 3 years ago at Disney). I chose this shoe because they were breathable but enclosed, suiting my orthotic needs. I admit that I have narrow feet, but the orthotics make these shoes fit more narrow so I'm not sure if they actually run narrow. However, they fit my feet perfectly without being overly tight.

     
    5.0

    Fantastic style and super comfy!

    By 

    from undisclosed

    Verified Buyer

    Comments about KEEN Women's UNEEK O2:

    Fantastic style and super comfy! I love my new Spring walking sandals!

     
    4.0

    A boat style shoe with less Prep!

    By 

    from undisclosed

    Verified Buyer

    Comments about KEEN Women's UNEEK O2:

    This shoe is so comfortable! Feels Moreno supportive than other keens I've had, and the color is fantastic. I plan to get great use out of these this spring and summer. Bought them with a trip to Disney in mind soon.
    There is one thread or something slightly scratching my inner arch on one foot. I can't locate what it is exactly. No blisters just the slightest bit of scratching. Hoping to wear them in before I wear them for long days on my feet.

     
    5.0

    Fun new Keen style

    By 

    from undisclosed

    Verified Buyer

    Comments about Women's UNEEK O2:

    I love my other Keens so I wanted to try this "different" style. They are really cute, very comfy, and a fun blue color. I plan to wear them w dresses, shorts, pants... for all occasions. So glad I gave them a try. My usual size fits just right.

    Displaying reviews 1-10

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

– Edward Abbey

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