Ten Thousand Interval Short

Everything You Should Know Before Buying

By: Jeremy Fox, CNC, CPTPublished: June 12, 2023

With the ubiquity of internet marketing, it seems like ads for gym clothes have inundated every social media feed and webpage. Consequently, selecting the most suitable pair of shorts for your workout routine can be a challenging undertaking.

Assuming that you have narrowed your search to a handful of brands, I have prepared a buyer’s guide for Ten Thousand Interval Shorts. This article will assist you in feeling confident about whichever purchase you make.

Ten Thousand Interval Short Review

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Ten Thousand Interval Short Overview

Ten Thousand is a US-based men’s fitness apparel brand with a focus on athlete-led designs that fit a functional need. They collaborate with professional CrossFitters and endurance athletes to develop and test gear that gets the job done.

The Interval Short is Ten Thousand’s flagship product and is designed to provide optimal versatility for hybrid athletes undertaking a variety of workouts and exercises. So whether you do CrossFit, casual cardio, HIIT, or weightlifting, the Interval Short has you covered.

Ten Thousand Interval Short Front
Ten Thousand Interval Short Back

Ten Thousand Interval Short Details

The Ten Thousand Interval Short is packed full of features to maximize mobility and versatility. And there are many small details that improve functionality and fit.

For example, these shorts have a lightweight shell with 4-way stretch and gusseted leg openings. They also have a soft no-pinch waistband and deep outer pockets with a single zip pocket to secure your stuff.

In addition, this short is the most customizable in the lineup with 5″, 7″, or 9″ inseams and with or without a liner. Plus, there are 13 colors to choose from, the most options of any Ten Thousand short.

Interval Short Features

  • Four-way stretch fabric for range of motion.
  • Sweat & moisture wicking.
  • Permanent anti-odor treatment.
  • Laser cut side vents.
  • No-bunch waistband.
  • Secure pocket system.
  • Gusseted leg opening for mobility.

Interval Short Specs

  • 86% polyester / 14% spandex
  • 133 gsm (lightweight)

Interval Short Options

  • 13 color options
  • 3 inseam lengths
  • Lined and unlined

Ten Thousand Short Comparison

While the Interval Short is Ten Thousand’s marquee product, they also have a full lineup of other impressive shorts. So if you’re not sure which one is right for you, this section should help you decide.

The other top-selling Ten Thousand products are the Session Short, Tactical Short, Set Short, and Foundation Short. Each of these bottoms has a unique design and is built for a specific function.

Table 1 below shows the description, best use, fabric weight, and fabric weight to help you see if the Interval Short fits your use case.

Table 1. Ten Thousand Short Comparison
Short Description Best For Fabric Weight
Session Light, Minimalist Running Ultralight
Interval Versatility, Mobility Cross Training Light
Tactical Performance, Functionality Rucking Mid
Set Water Repellent, Fast Drying Swimming Mid
Foundation Durability, Comfort Powerlifting Heavy


Ten Thousand Interval Short Sizing

I admit I’m typically hesitant when buying clothes online because they often don’t fit. And I’ve even had to return pairs of Ten Thousand Tactical and Session shorts because they were too tight and too loose, respectively.

However, the sizing guide on the Interval Short product page made finding the right fit super easy. They have examples of guys wearing each size short, including their height, weight, and waist size.

In addition, the “find your fit” section includes detailed measurements of the critical dimensions for each short size. For instance, you can see the waist, hip, thigh, and leg opening measurements for your desired style and size.

Ten Thousand Interval Short Size Guide

If you’re unsure of your short size, measure your waist, hips, and thighs. Then compare that to the product measurements to find your correct size.

Ten Thousand Interval Short Review

After owning a pair of Foundation shorts for over 2 years, they finally started to wear out, and I decided to give the Interval shorts a try. But first, I checked the reviews other people left.

On the Ten Thousand website, buyers gave the Interval Short an average rating of 4.7 stars, with the overwhelming majority of 91% of reviews being a 4 or 5-star rating. I’m generally skeptical about whether websites publish an accurate sample of good and bad reviews, but decided to buy the shorts.

Now I’ve had two pair of Ten Thousand Interval Shorts since early 2023. And I’ve used them for everything from hiking in Hawaii to weightlifting in Wisconsin.

For some additional background, I primarily train for bodybuilding, but I also run, cycle, and even the occasional Spartan Race. With that, here is my assessment of the fit, functionality, durability, and value of the Interval short.

Ten Thousand Interval Short Hiking

The Interval Short worked perfectly for humid Hawaii hiking.

Ten Thousand Interval Short Front and Back

I also like the Interval Shorts & Seamless Shirt for resistance training.

Fit & Comfort

One of the most common complaints other buyers had about the Interval shorts was how they fit. Some people seem to find the liner too loose on their legs.

My experience has been that the liner fits perfectly snug on my thighs and doesn’t ride up while I’m working out. However, I opted for the shortest 5″ inseam, so the outer shell sometimes slides up my legs.

I should point out that I wear a size Medium at 5’9″ and 170 lbs with a 31″ waist. But I also have relatively thick 24″ thighs, which could be why the liner isn’t loose on my legs.

Ten Thousand Interval Short Lined vs Unlined

Lined vs. Unlined

For many years, I’ve been skeptical about lined shorts. Just something about the idea always took me back to those awful 90’s swim trunks with built-in mesh briefs.

But I decided to put the liner to the test by purchasing a pair of lined and unlined Interval shorts. And I must say, I was pleasantly surprised by the Interval short lining.

The biggest benefit is that the squat wedgie is gone for good. With unlined shorts and boxer briefs, I can’t even bend over without fabric going where I don’t want it. But the lined shorts stay precisely where they should, outside your butt.

However, lined Interval shorts might not be for everyone. If you have skinny thighs, then you might want to go for unlined. Again, I strongly recommend taking measurements and consulting the size guide.


Most of the time, I wear the Interval shorts in the gym for weightlifting or outdoors for steady-state cardio, and they perform equally well for both. At the same time, I am comfortable wearing them around the house and even wear them while working from home.

The stretchy shell provides an excellent range of motion during squats and lunges, while the lightweight fabric and side vents are ideal for hot weather conditions. I will say I would prefer the unlined shorts for running as they are much lighter.

In the short video below, you can see me put the Interval short through a landmine circuit, including front squats, RDLs, sumo squats, and lunges.


Compared to other gym shorts I own, the Ten Thousand Interval short seems to be made of much higher-quality fabric. Also, the seams and stitching are tighter than cheaper brands.

That said, I have noticed the stitching in the seat of the shorts has started to fray after only a few months. Not enough damage to diminish the performance, yet a sign that they probably won’t hold up as long as the Foundation shorts.

I suppose this is to be expected when subjecting a lightweight hybrid short to everyday weightlifting workouts. But I was hoping for better durability at this price point.


With a price tag of $68, the Interval short is on the expensive end of the gym short market. But the shorts also look and feel higher quality than comparable items from Nike, Under Armor, or Gym Shark.

In addition, the Interval shorts fit better and outperform the cheaper gym shorts I’ve tried. And I think they will last longer than most shorts in the lightweight category.

However, I wouldn’t recommend putting them through your toughest workouts. Also, follow the care instructions to extend the life of your Interval shorts and get the most value for your money.

Ten Thousand Interval Short Discount Code

Save 15% On Interval Shorts

Use discount code JFOX15 and save $9.75 on Ten Thousand Interval shorts!

Plus, get free shipping on orders over $75 and free returns & exchanges.

Ten Thousand Interval Short Pros & Cons

To summarize, let’s review some of the pros and cons I’ve covered so far. The main selling point of the Interval short is that they are extremely versatile, from weightlifting to lounging, these shorts get it done.

Also, Ten Thousand offers free shipping on orders over $75 as well as a lifetime guarantee and free exchanges and returns on qualifying purhcases.

However, the main downside to Interval shorts is that popular options are often out of stock, so you may have to wait to get the pair you want. Also, products are not made in the US and some items don’t ship internationally.

And, of course, Ten Thousand shorts are spendy. That, combined with the relatively low abrasion resistance could be another reason to opt for a more robust short.


  • Versatile enough for multiple workout types.
  • Durable enough to handle moderate weightlifting.
  • Comfortable enough to lounge in.
  • Stylish enough to go anywhere.
  • Free shipping on orders over $75
  • Lifetime guarantee, free returns/exchanges


  • Popular sizes/options often out of stock
  • Not manufactured in the USA
  • Higher price point
  • Not as tough as Foundation short

Interval Shorts FAQ

Next, I’ll answer other questions you might have before buying your Interval shorts.

Is the Interval short liner removable?

No, the liner is sewn into the Interval short so you cannot take it out.

Does the Interval short have a cell phone pocket in the liner?

Yes, the Interval short has a cell phone pocket on the outer thigh of the liner. The Foundation and Tactical shorts also have this feature if you get the lined versions.

Is the Interval short liner longer than the shell?

No, the Interval short liner is 1/2″ shorter than the outer shell so it will not hang out of the shorts.

Can you swim in the Interval short?

Technically, you can swim in the Interval shorts, but they are not designed for that. Only the Set shorts have chlorine and saltwater resistance for regular swimming in pools or the ocean.

Are Ten Thousand shorts made in the USA?

Ten Thousand products are designed in the United States, but they use a variety of overseas manufacturers . The company has stated that it’s Interval Shorts come from vendors in Vietnam, China,  and Columbia.

Interval Short Purchase Options

The easiest way to purchase your Interval shorts is from the Ten Thousand website. You’ll find more pictures and reviews there, along with more detailed descriptions and sizing information.

Remember to use coupon code JFOX15 to get a discount on all items you order!

Ten Thousand Interval Short Logo

More Product Reviews

Now you should be able to make an informed decision about your gym shorts purchase. Here are some additional product reviews and buyer’s guides that I think you might find informative.

Sweet Sweat Waist Trimmer Review

REP Fitness Dumbbell Rack Review

REP Fitness Landmine Attachment Install

REP Fitness Power Rack Buyer’s Guide

Rep Fitness Power Rack

I hope this guide has helped you make an informed decision about your purchase, even if you don’t go with Ten Thousand. For more informative articles, check out my other great fitness-related content below!

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By |June 12, 2023|Workouts|Comments Off on Ten Thousand Interval Short Review & Buyer Guide
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