Oso Flaco

Size Guide
Discounted price is available only in select sizes and "while supplies last".
We won't have any extra stock nor will we be able to make additions to the sizes that are out of stock.

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 *Patented
Vegan: Yes

LUNA Sandals - Vibram MegagripLUNA SandalsLUNA Sandals - Seattle Made

Take the Oso 2.0 and shave it down to its “bear” essentials and you have the Oso Flaco (“Skinny Bear” in Spanish). This sandal is for those who want the most aggressive tread pattern for crazy grip, but also want super flexibility and full ground feel.

Customer Reviews

Based on 202 reviews
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    Sarah B. Verified Buyer

    Love it!

    Bought them in Seattle while visiting family. Loved the shop and the experience there. The sale person was great and very attentive to my needs. I love the fact that I can grip with those sandals on all kind of terrain, even wet rocks! Best of all is that I can actually still feel the ground under foot but save my skin on rugged terrain. I got the tabis as well and it is such a great combo in wet and cold weather or if I just feel like a bit extra protection. I am not looking at anything else for a long time...

    Kyle S. Verified Buyer

    Customer service

    I think I talked to Mark. Best Customer service I have ever experienced. I had an issue with my 1st pair of Oso Falco’s after 6 months. Mark replaced after I texted him a picture. Will definitely recommend Luna’s to anyone that will listen.

    Anonymous Verified Buyer

    best ever

    i was i seattle and they had open tehe store extra hour som could go. and the sandals are awesome. not that thick but soft and the grip are amazing.

    Robert F. Verified Buyer
    United States

    Great Sandal

    The Luna Sandals our a very high quality product. The Oso Flaco I use primarily for trail running and hiking. I live in North Central Pennsylvania which has very wet, rocky, rooted and mountainous trails. This has been the only sandal I have tried so far that stays on your foot well when wet. When mud and steep inclines are combined...that is the only time the sandal does get compromised a bit...everything has its limits. Great product...thank you!

    Andrea Gad Verified Buyer

    Amazing sandals

    I have had 5 different sandals in the last month, none of them has the perfect fit and grip like those ones. I did buy the tabus, they do keep my feet warm as I live in the North East, and it gets pretty cold here. Shipping took 2 days, went for my run today, I have never had such An amazing run before. One thing u need to use the template, my size when I measured my feet didn't match the template at all and I had to change my size, which brings me to cusotner service is awesome, they changed the size for me twice not once Thank u Luna :)