Written by  
Jason
Last updated on:  
June 13, 2023

LUNA Oso Flaco Winged vs. Xero Z-Treks | Barefoot Sandals Comparison & Review

Inside this article:

Introduction 👟

Ever found yourself wishing for a lightweight, minimalist shoe that can handle a range of adventures without weighing you down? Well, you're in luck! In this article, we're comparing two popular minimalist footwear options designed for outdoor enthusiasts who value performance and versatility:

Luna barefoot sandals

the Oso Flaco Winged Edition by Luna Sandals and the Z-Trek from Xero Shoes.

Z-Treks barefoot sandals

Both models cater to individuals seeking a superb balance of comfort, durability, and practicality in a minimalist shoe for various activities, including trail running, hiking, and casual daily wear.

In this comprehensive comparison, we'll dive deep into their features, design, versatility, sizing advice, pricing, brand background, and customer feedback to help you determine which of these barefoot sandals is the right choice for your next adventure. So, let's strap in and get ready to explore the world of minimalist footwear with these two distinctive models! And if you're just beginning your minimal footwear journey, don't forget to read our Ultimate Guide to Barefoot Shoes for the full lowdown on what to expect.

Purpose and Versatility 🦶

So, you're looking for a versatile, high-performance barefoot shoe that won't hold you back in your quest for adventure? Let's dive into the intended purpose and versatility of the Oso Flaco Winged Edition and Z-trek and see which one suits your needs better.

a person walking with Luna barefoot sandals on

The Oso Flaco Winged Edition is designed for those who crave top-notch performance in minimalist footwear. Its Vibram Megagrip studded tread allows for optimal traction on various terrains such as mountains, rivers, trails, and mud. Primarily recommended for minimalist trail running, some users find it more comfortable while running than walking or hiking due to its lightness and flexibility. However, it may not be the best option for carrying heavy loads or engaging in other activities like weightlifting and CrossFit.

a person umping over rocks with Z-Treks barefoot sandals on

On the other hand, Z-trek by Xero Shoes is your go-to choice for a more well-rounded barefoot experience. Perfect for trail and urban settings, water adventures, and even casual use, Z-trek offers a lightweight and comfortable option for various activities. Though it doesn't come with the same aggressive tread as the Oso Flaco, many users still appreciate its versatility and performance in most settings.

When it comes to choosing between these two options, you'll have to weigh the importance of specialized performance versus overall versatility. Are you focused mainly on trail running and don't mind sacrificing a bit of support for extra ground feel? Then the Oso Flaco Winged Edition might be your preferred choice. But if you're interested in a more adaptable barefoot sandal for multiple activities and daily wear, the Z-trek could be the better option. Whichever you choose, remember that finding the right barefoot shoe also depends on your personal preferences and specific needs.

Design 😍

Let's dive into the design aspects of these two sandal models which can make or break your outdoor experience.

Luna barefoot sandals

The Oso Flaco Winged Edition is all about performance. With its waterproof Vibram® Megagrip outsole and 7mm base + 4.5mm lugs, these sandals provide exceptional grip on various terrains. This vegan-friendly minimalist sandal sports a Monkey Grip Technology (MGT) footbed and weighs in at a mighty-light 7.2 oz for a men's size 9. The Gen3Wings help secure your foot while maintaining flexibility and comfort.

Z-Treks barefoot sandals

On the other hand, the Z-trek offers a versatile approach to barefoot sandals. These sandals are designed to handle a range of activities from city walking to trail hiking. While similar in overall functionality, the Z-trek may not have as aggressive a tread as the Oso Flaco, but its practicality and affordability make it a competitor worth considering.

When it comes down to barefoot feel, the Oso Flaco is slightly thicker with an 11mm thickness compared to the Z-trek which might provide a more natural ground feel. However, this might come down to personal preference and usage intentions, as some users found the Oso Flaco to be more comfortable when running rather than walking or hiking (source).

In terms of aesthetics, while style is subjective, both sandals offer a unique approach to minimalist footwear with their lightweight and innovative design features. The Oso Flaco's winged-lace design stands out, while the Z-trek provides a more conventional look. Ultimately, it's up to you to decide which style suits your taste.

Sizing and Fit Advice 📐

For the Oso Flaco Winged Edition, Luna Sandals recommends that most men size down 1/2 to a full size, while women usually find their true size to be accurate. Remember, with LUNAs, you're aiming for a close fit without too much excess space around your foot. For more detailed guidance, you can visit their size guide.

a pair of Luna barefoot sandals

The Z-trek by Xero Shoes tends to run about 1/2 size large and is only available in whole sizes. To double-check your size, you can refer to their printable templates to make sure you're getting the correct fit. Keep in mind that the Z-Trek toe box may not be wide enough for natural toe-splaying for those with extremely wide feet.

A pair of brown Z-Treks barefoot sandals

Finding the right fit for your minimalist sandals can make all the difference in terms of comfort and performance, especially when transitioning from traditional shoes to barefoot footwear. Don't forget to take your time adjusting the straps to find the perfect balance between support and freedom of movement. And as always, feel free to share your own experiences and preferences in the comments section below!

Price Comparison 💰

Onto price, there's a notable difference between the Oso Flaco Winged Edition from Luna Sandals and the Z-trek from Xero Shoes. The Oso Flaco Winged Edition is priced at $115.00,

Luna barefoot sandal top view

while the Z-trek can be yours for $59.99. That's almost a 50% price difference, which might make you question whether the Oso Flaco is worth the extra investment.

Z-trek barefoot sandal top view

However, before making a decision based solely on price, consider the unique features and benefits each model offers. The Oso Flaco is designed for high-performance, big adventures, and is known for its excellent traction and secure fit, whereas the Z-trek is more versatile with activities ranging from water sports to city strolling.

If you're undecided, try visiting our sales page to see if there are any current discounts or promotional codes available for these barefoot shoes. Remember that a good deal isn't just about the lowest price – it's about finding the right balance of quality, features, and value for your needs.

If you're still unsure or need more guidance on purchasing minimal footwear, don't hesitate to browse our other articles, or drop a comment below to ask the minimalist footwear community for their honest opinions and experiences with these two models.

About Luna Sandals and Xero Shoes 🔨

When it comes to barefoot sandals, you can't ignore the significant contributions of these two well-known brands. Each brand brings its own unique design philosophy and commitment to promoting natural movement.

Luna Sandals, founded by the "Barefoot Ted" McDonald, focuses on producing performance-focused minimalist footwear that's ready for big adventures.


Xero Shoes, founded by former professional athlete Steven Sashen and his wife, Lena Phoenix, aims to let you enjoy natural, barefoot movement in a stylish and affordable package. With a wide range of options that cater to different activities, such as walking, hiking, yoga, biking, and even ultramarathoning, Xero Shoes emphasize the importance of promoting a healthy lifestyle through minimalist footwear.

Choosing between Luna Sandals and Xero Shoes will depend on your personal preferences, the specific models in comparison, and the activities you intend to pursue. Rest assured that both brands are highly respected in the barefoot shoe community, offering top-notch quality and performance in their respective lineups.

Returns & Customer Reviews 💬

When it comes to returns, both the Oso Flaco Winged Edition and the Z-Trek both have customer-friendly policies. Luna Sandals offers a 30-day no-questions-asked return policy, while Xero Shoes takes it up a notch with a 45-day return policy for unworn shoes. If you plan to exchange your sandals for a different model, Luna even covers the return shipping. Xero's warranty covers a solid 24-month manufacturing guarantee and a 5,000-mile sole warranty, which is quite impressive for minimalist footwear.

As for community feedback, Luna's Oso Flaco Winged Edition users report excellent traction on various terrains and commend its performance for minimalist trail running. However, some users experienced discomfort due to the thin straps and fixed rubber elements on the sides of the foot, while others struggled with adjusting the sandals for the perfect fit.

On the other hand, Z-Trek users seem to appreciate the versatility offered by these sandals, with many wearing them for various activities, including hiking, yoga, biking, and even ultra-marathons. Some customers suggest tightening the ankle strap and loosening the toe strap for maximum comfort, while others love the Z-Trek's sibling, the Z-Trail.

At the end of the day, people's preferences can be subjective, which is why both brands offer return policies to ensure customer satisfaction. Remember, it's essential to try these sandals on and test them for your specific activities.

Final Thoughts ⭐

So, which one of these two minimalist sandals should you choose: the Luna Oso Flaco Winged Edition or the Xero Z-Trek? It ultimately comes down to your personal preferences and how you plan to use your sandals 🏞️

For the adventurous barefoot enthusiast who prefers a more aggressive tread and obstacle-crushing capabilities, the Luna Oso Flaco Winged Edition is a top choice. It's slightly heavier than the Xero Z-Trek but boasts excellent traction and durability, perfect for trail running, hiking and other outdoor escapades. However, some users reported discomfort with the thin straps and rubber side elements, so it's essential to try them on before purchasing. 💪

If you're looking for something more versatile, the Xero Z-Trek is a great option. It's lightweight, comfortable, and offers decent traction across various terrains, making it suitable for a broader range of activities, including urban exploration and water sports. Sizing may be a bit tricky, so it's wise to follow the brand's advice and confirm sizing with the printable templates. Considering its lower price point and similar performance characteristics, the Z-Trek might be the better value for your money. 💸

Ultimately, only you can determine which sandal is the best fit for your needs and lifestyle. Thanks to the generous return policies from both brands, you can test out both sandals and see which one meets your barefoot expectations. 😎

One more thing: If you're looking for some sweet discounts or ongoing sales, don't forget to check our sales page for exclusive offers and potential savings! And if you haven't already, make sure to subscribe to our email newsletter for the latest barefoot news, tips, and updates. 👟

Lastly, we'd love to hear from you! Share your experiences, preferences, and questions in the comments section below. We're here to learn from and support one another on our barefoot journey. 🙌

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