Oso Flaco Winged Edition
Best For: Trail running, barefoot training, water
From $120.00
Color —
- Free US shipping from $105
- Wear for 30 days risk free
- MoonRock Warranty
Why we love this
- LIGHTEST WEIGHT
- EXTREME GRIP
- THIN YET RUGGED
Using our specially developed Vibram Megagrip studded tread, we've built a sandal that can handle the complex world of real adventure: mountains, rivers, trails, mud.
Dig in: 7mm base + 4.5mm lugs
Best in Class: Waterproof Non-Marking Vibram® Megagrip Outsole
Get a grip: MGT (Monkey Grip Technology) footbed + Vibram® MegaGrip Outsole
Ready to fly: Supple, easy adjust performance laces kicked up a notch by our super secure wing design.
Move Natural: A free foot is a healthy foot. Always zero drop, zero toe-box, zero problems
Vegan Friendly: Animal free product.
Refined Simplicity: "Everything you need, nothing you don't."
Made in USA or Vietnam (Learn More)
Most women are true to size.
With LUNAs, you want a close fit and not a lot of space around your foot.
For more detailed guidance and support, please visit our size guide.
Size Guide (Learn More)
Wear them. Really wear them.
Take your LUNAs out for 30 days and use them the way you actually will. Trail miles, river crossings, the walk for coffee, a whole day on your feet. Get them dusty, get them wet, put real ground under them. There is no mileage limit and no keep-them-pristine clause.
If they turn out not to be right for you, send them back within 30 days of delivery for a refund, no questions asked, however worn they are. Want to try a different model instead? Return shipping is on us.
Clearance items are not eligible. Original shipping is not refunded. In the US, returns are free if you added Checkout+ at checkout. Without it, a $10 return fee comes off your refund. Full returns and exchanges policy
LUNAFICATION GUARANTEE
Wear them as hard as you like for 30 days. If they are not right for you, send them back for a refund, no questions asked, however many miles are on them.
Rivers Do Not Bother It.
- BLBen L.ReviewingOso Flaco Winged EditionI recommend this productRated 5 out of 5 stars4 weeks agoGreat sandals!
I had a pair of the old-school Luna prototypes. Ran through them, and finally decided to upgrade. The Oso Flacos exceeded my expectations! I’ve had them for about 7 months now and they’re still going strong. They helped me to a half-marathon PR a couple weekends ago! Overall would recommend.
- AAAllan A.Verified BuyerReviewingOso Flaco Winged EditionRated 3 out of 5 stars1 month agoNoisy
Unlike my previous Lunas these made an annoying slapping sound when walking on a hard (sidewalk) surface,
- SShougoVerified BuyerReviewingOso Flaco Winged EditionI recommend this productRated 5 out of 5 stars1 month agoLove the Monkey Grip
Oso Flaco (Winged) has been my favorite sandal. It is comfortable and easy to adjust.
Excellent for trail running. Love the Monkey Grip..
- BGBenjamin G.Verified BuyerReviewingOso Flaco Winged EditionI recommend this productRated 5 out of 5 stars1 month agoAbout what I expected
It took awhile for my feet to build the calluses to wear this all day without discomfort, but after a week or so I'm fine. Grippy, good for hiking. I would say they're good for lifting as well but it turns out most gyms require closed toe shoes and will ask you to leave for wearing these.
- AAnonymousVerified BuyerReviewingOso Flaco Winged EditionI recommend this productRated 5 out of 5 stars1 month agoExactly What I Expected
These are the best and most unique sandals I've owned. They are definitely the closest thing to being barefoot while protecting my feet. I tried running in them, and I'm going to have to build up to it while mixing in days with my regular zero drop shoes. The first thing I noticed was that they loosened my normally tight calves. That was an unexpected and much needed surprise! However, my muscles and feet are going to need some time to fully adapt. The construction is solid and I love the simplicity of a single piece of webbing for a strap. They were exactly what I was hoping for.