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    WE MADE MORE THAN 200,000 FEET HAPPY. IT IS YOUR TURN!

    212 Reviews

    Retro Oso Flaco

    Size Guide
    LUNA Sizing
    Once you've determined your size, you can double check it by clicking the corresponding Printer Iconand printing out a template.
    When printing our copyrighted PDF templates, make sure the "Scale" in the Print Window is set to 100% or the template won't be accurate.
    If using the Chrome browser, make sure the "Fit to page" checkbox is UNCHECKED.
    After you print out the template, also double check the scale by comparing a ruler to the ruler that prints on the template.
    Toes should be close to edge, but not hang over. Want our opinion? Send a photo of your foot on the template support@lunasandals.com
    The biggest issue people have is not having the template accurately printed, so double check twice. ;-)

    ADULT SIZES

    (Centimeters) Your Foot LUNA Mens LUNA Womens the actual width of our sandal in centimeters Print
    21.9 - 22.2 4 6 9.2 Printer-icon
    22.3 - 22.6 4.5 6.5 9.4 Printer-icon
    22.7 - 23 5 7 9.6 Printer-icon
    23.1 - 23.5 5.5 7.5 9.8 Printer-icon
    23.6 - 23.9 6 8 10 Printer-icon
    24.0 - 24.3 6.5 8.5 10.2 Printer-icon
    24.4 - 24.7 7 9 10.4 Printer-icon
    24.8 - 25.2 7.5 9.5 10.55 Printer-icon
    25.3 - 25.6 8 10 10.7 Printer-icon
    25.7 - 26.0 8.5 10.5 10.85 Printer-icon
    26.1 - 26.4 9 11 11 Printer-icon
    26.5 - 26.8 9.5 11.5 11.15 Printer-icon
    26.9 - 27.3 10 12 11.35 Printer-icon
    27.4 - 27.7 10.5 12.5 11.5 Printer-icon
    27.8 - 28.1 11 13 11.7 Printer-icon
    28.2 - 28.5 11.5 13.5 11.85 Printer-icon
    28.6 - 29.0 12 14 12 Printer-icon
    29.1 - 29.4 12.5 14.5 12.2 Printer-icon
    29.5 - 30.1 13 15 12.4 Printer-icon

     

    LUNAcito Sizes

    Length LUNAcito Sizes Print
    19cm K12
     >>View Template
    Printer-icon
    19.8cm
    K13
     >>View Template
    Printer-icon
    20.6cm
    K1
     >>View Template
    Printer-icon
    21.5cm
    K2
     >>View Template
    Printer-icon
    22.4cm
    K3
     >>View Template
    Printer-icon
    LUNA Sizing
    Once you've determined your size, you can double check it by clicking the corresponding Printer Iconand printing out a template.
    When printing our copyrighted PDF templates, make sure the "Scale" in the Print Window is set to 100% or the template won't be accurate.
    If using the Chrome browser, make sure the "Fit to page" checkbox is UNCHECKED.
    After you print out the template, also double check the scale by comparing a ruler to the ruler that prints on the template.
    Toes should be close to edge, but not hang over. Want our opinion? Send a photo of your foot on the template support@lunasandals.com
    The biggest issue people have is not having the template accurately printed, so double check twice. ;-)

    ADULT SIZES

    (Centimeters) Your Foot LUNA Mens LUNA Womens the actual width of our sandal in centimeters Print
    21.9 - 22.2 4 6 9.2 Printer-icon
    22.3 - 22.6 4.5 6.5 9.4 Printer-icon
    22.7 - 23 5 7 9.6 Printer-icon
    23.1 - 23.5 5.5 7.5 9.8 Printer-icon
    23.6 - 23.9 6 8 10 Printer-icon
    24.0 - 24.3 6.5 8.5 10.2 Printer-icon
    24.4 - 24.7 7 9 10.4 Printer-icon
    24.8 - 25.2 7.5 9.5 10.55 Printer-icon
    25.3 - 25.6 8 10 10.7 Printer-icon
    25.7 - 26.0 8.5 10.5 10.85 Printer-icon
    26.1 - 26.4 9 11 11 Printer-icon
    26.5 - 26.8 9.5 11.5 11.15 Printer-icon
    26.9 - 27.3 10 12 11.35 Printer-icon
    27.4 - 27.7 10.5 12.5 11.5 Printer-icon
    27.8 - 28.1 11 13 11.7 Printer-icon
    28.2 - 28.5 11.5 13.5 11.85 Printer-icon
    28.6 - 29.0 12 14 12 Printer-icon
    29.1 - 29.4 12.5 14.5 12.2 Printer-icon
    29.5 - 30.1 13 15 12.4 Printer-icon

     

    LUNAcito Sizes

    Length LUNAcito Sizes Print
    19cm K12
     >>View Template
    Printer-icon
    19.8cm
    K13
     >>View Template
    Printer-icon
    20.6cm
    K1
     >>View Template
    Printer-icon
    21.5cm
    K2
     >>View Template
    Printer-icon
    22.4cm
    K3
     >>View Template
    Printer-icon

    Retro Oso Flaco Specs
    Made in Seattle, USA.
    Weight: 7.2 oz (single sandal, men's size 9)
    Thickness: 7MM base + 4.5MM lugs
    Sole Non-Marking  Vibram® Megagrip Outsole + Vibram® Midsole
    Laces: Performance Laces 2.0 with Tech Straps *Patented
    Vegan: Yes

    LUNA Sandals - Vibram MegagripLUNA SandalsLUNA Sandals - Seattle Made

    Back by popular demand! The Oso Flaco represents the “bear” essentials for a truly trail worthy sandal. This sandal is for those who want the most aggressive tread pattern for crazy grip with our original lacing system along with the super flexibility, full ground feel and the greatest durability possible. It's back!

    Customer Reviews

    4.7 Based on 212 Reviews
    5 ★
    82% 
    173
    4 ★
    10% 
    21
    3 ★
    3% 
    6
    2 ★
    4% 
    8
    1 ★
    1% 
    4
    Write a Review

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    Filter Reviews:
      A
      06/26/2019
      Anonymous

      LOVE these!

      My first Luna sandals (purchased with Oso 2.0 for hiking), won’t be the last. They have made it so that I dislike my other shoes intensely! I love how they feel a part of my foot, my foot made better. Wish they made something for snow and cold hiking! Luna, any chance?... Ordering Brujita next :)

      A
      05/12/2019
      Anonymous

      Finally found my perfect outdoor sandals!

      I barely broke them in and hiked 2 miles, then 4 miles and NO BLISTERS! I have tried Chacos over and over and they gave me blisters every time!! But the flacos are thin so that you can wear around town and have a great hike in them. I’m in love thanks Luna

      JO
      04/28/2019
      Javier O.

      Great sandals!

      LUNAs Oso Flaco are really comfortable, and they have an incredible grip. I am very impressed with them and happy with the purchase.

      MB
      04/25/2019
      Mike B.

      Love them!

      Aside from the postal service jacking up my delivery I love my Oso Flacos. Took me a while to get used to the "zero" incline or whatver they call it. I also bought the Origen (2.0) as well shortly after but find taht I go to these for my everyday use. So far I attribute that to the easier break-in since they are considerably thinner and also that I got leather laces for the Origens which are now growing on me but they not as easy to adjust or as comfortable as the Performance Laces..which I would recommend instead of the leather. I tend to wear the Origens only when I want to look a little dapper. I'm a 10.5 normally but in both my Oso Flacos and my Origens I'm feeling I should have definitely opted for a smaller size, perhaps a 10 or a 9.5? Not sure. I will have to size better on the next pair I buy but even still..great f*!n sandals! There's a magic to them I can't quite put my finger on. I've never been this excited about footwear since Magic Johnson came out with his Converse shoe in the 80s. Even some of my friends have made comment about how my energy has positively shifted since I got these sandals. I do a lot of walking and brief jogging (2-3 blocks) so I can't attest to the running experience. There's been once or twice where my feet were sore and I missed my cushy running shoes and I wanted to get out of them but I feel that was more an issue of conditioning my feet back to a more natural state of footwear. The Oso Flaco's tend to get a lot of curious stares as well which is interesting because the Origens are essentially the same design but dont garner the same attention. Maybe it's the low profile / thinness of this model? I dunno...but like I said..great sandal.. my advice: just make sure you size right, opt for performance laces, and make sure that if your're ordering via US Postal Service that they dont mess up your delivery because their system can "auto-correct" your address to a wrong address.

      CP
      04/23/2019
      Chantal P.

      Amazing grip for out of the box adventures

      Traversed snow fields after a 4 day ski touring trip in the Swiss Alps, incredible grip and comfort. Super fan!!