WE ARE MOVING!
EXPECT SHIPPING DELAYS UNTIL JAN 18TH

855-586-2726

Find what you seek

Search

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

249 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 Mens US Womens US EU UK actual width in centimeters Print
21.9 - 22.2 4 6 36 3 9.2 Printer-icon
22.3 - 22.6 4.5 6.5 36.5 3.5 9.4 Printer-icon
22.7 - 23 5 7 37 4 9.6 Printer-icon
23.1 - 23.5 5.5 7.5 37.5 4.5 9.8 Printer-icon
23.6 - 23.9 6 8 38 5 10 Printer-icon
24.0 - 24.3 6.5 8.5 38.5 5.5 10.2 Printer-icon
24.4 - 24.7 7 9 39 6 10.4 Printer-icon
24.8 - 25.2 7.5 9.5 39.5 6.5 10.55 Printer-icon
25.3 - 25.6 8 10 40 7 10.7 Printer-icon
25.7 - 26.0 8.5 10.5 40.5 7.5 10.85 Printer-icon
26.1 - 26.4 9 11 41 8 11 Printer-icon
26.5 - 26.8 9.5 11.5 41.5 8.5 11.15 Printer-icon
26.9 - 27.3 10 12 42 9 11.35 Printer-icon
27.4 - 27.7 10.5 12.5 42.5 9.5 11.5 Printer-icon
27.8 - 28.1 11 13 43 10 11.7 Printer-icon
28.2 - 28.5 11.5 13.5 43.5 10.5 11.85 Printer-icon
28.6 - 29.0 12 14 44 11 12 Printer-icon
29.1 - 29.4 12.5 14.5 44.5 11.5 12.2 Printer-icon
29.5 - 30.1 13 15 45 12 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 Mens US Womens US EU UK actual width in centimeters Print
21.9 - 22.2 4 6 36 3 9.2 Printer-icon
22.3 - 22.6 4.5 6.5 36.5 3.5 9.4 Printer-icon
22.7 - 23 5 7 37 4 9.6 Printer-icon
23.1 - 23.5 5.5 7.5 37.5 4.5 9.8 Printer-icon
23.6 - 23.9 6 8 38 5 10 Printer-icon
24.0 - 24.3 6.5 8.5 38.5 5.5 10.2 Printer-icon
24.4 - 24.7 7 9 39 6 10.4 Printer-icon
24.8 - 25.2 7.5 9.5 39.5 6.5 10.55 Printer-icon
25.3 - 25.6 8 10 40 7 10.7 Printer-icon
25.7 - 26.0 8.5 10.5 40.5 7.5 10.85 Printer-icon
26.1 - 26.4 9 11 41 8 11 Printer-icon
26.5 - 26.8 9.5 11.5 41.5 8.5 11.15 Printer-icon
26.9 - 27.3 10 12 42 9 11.35 Printer-icon
27.4 - 27.7 10.5 12.5 42.5 9.5 11.5 Printer-icon
27.8 - 28.1 11 13 43 10 11.7 Printer-icon
28.2 - 28.5 11.5 13.5 43.5 10.5 11.85 Printer-icon
28.6 - 29.0 12 14 44 11 12 Printer-icon
29.1 - 29.4 12.5 14.5 44.5 11.5 12.2 Printer-icon
29.5 - 30.1 13 15 45 12 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 Waterproof 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
4.6 Based on 249 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
    HS
    12/29/2020
    hart s.
    United States United States
    My feet are thankful :)

    Excellent. I have fat, wide and high arch feet which is sort of unusual for guy my height and body type. I have played sports all my life and consider myself normal athletic built but always had issues with shoes related injuries. Finally recovering from my years long feet injuries.

    A
    11/25/2020
    Anonymous
    United States United States
    Wear them until they can’t be worn anymore.

    My absolute favorite shoe 8 months out of the year.

    A
    10/28/2020
    Anonymous
    Canada Canada
    Perfect Sandals

    These sandals do not slip or move on the feet while climbing on rocks or running. They are flat and thin, which is ideal for someone who grew up mostly barefoot. I really love them a lot. I have very narrow feet and the customer service person with whom I communicated by email suggested I go with the Retro version because I'd be able to pull it a little more snug. This was great advice and great customer service.

    A
    10/23/2020
    Anonymous
    United States United States
    Love 'em!

    I'm so glad I decided to give LUNA sandals a try after nearly giving up based on less-than-awesome experiences with other minimalist sandals. They feel secure on my feet and the grippy soles are perfect for wading through streams, climbing on slippery, moss-covered rocks, and all the other things I get up to on an average hike. Over the course of one weekend, I put in about 20 miles in my LUNAs, and my feet felt great. They're super easy to clean, and I love the perfect balance between ground feel and protection so I'm not wincing over every sharp rock. These are my new sandals for life!

    A
    10/23/2020
    Anonymous
    United States United States

    This is a quality product. I researched and compared these to others before purchasing. I am so glad I bought these sandals. I love that these are made in the US. Very durable and comfortable. I’ve used them running to and from the beach, lifting weights, and walking on pavement and gravel. Allow time for your feet to adjust to the sandals in order to avoid getting hot spots or blisters. The thinner soles help maintain ground feel and allow greater whole-foot movement. I bought these with the technical straps. I did not need those after wearing them once. I highly recommend these sandals. To add context I have been using minimalist footwear or no footwear for 10 years. Your experience may vary, especially if you are not used to minimalist footwear. If you are interested in learning more about the benefits of moving like this please check out Move Your DNA by Katy Bowman or nutritiousmovement.com