Retro Oso Flaco - pair with outsole
Retro Oso Flaco - forest run, sole up
Retro Oso Flaco - single, top
Retro Oso Flaco - outsole
Retro Oso Flaco - tread pair
Retro Oso Flaco - Vibram MegaGrip diagram
Retro Oso Flaco
Retro Oso Flaco

Retro Oso Flaco

Best For: Trail running, barefoot training, approach

From $120.00

Size & Fit Guide
Upgrade to Made in USAHandcrafted to order+$15.00

Why we love this

  • WORTHY TRAIL SANDAL
  • EXTREME GRIP
  • THIN YET RUGGED
For those who demand the best in performance focused minimalist footwear that can handle the BIG adventures, the Oso Flaco is super attractive.

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.

Weight: 7.2 oz (single sandal, men's size 9).
Thickness: 7MM base + 4.5MM lugs.
Sole: Waterproof Non-Marking Vibram® Megagrip Outsole + Vibram® Midsole.
Footbed: MGT (Monkey Grip Technology).
Laces: Performance Laces 2.0 with Tech Straps *Patented.
Vegan Friendly: Animal free product.
Made in USA or Vietnam (Learn More).
Most men tend to size down 1/2 to a full size with LUNAs.

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, and $7.95 comes off your refund for the return label. 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.

Learn more

Bear Essentials.

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