We donate to many different organizations throughout the year. Here is a list of organizations we have donated to in 2023/24. If you would like details (dates/amounts) please contact us. We don’t often advertise our donations as we are cautious about using them as a marketing tool, because that is not our intention behind donations, but are happy to share details upon request!

(click links to learn more about each organization)

Financial Contributions:

Crag Law Center - Monthly donations

Equitable Giving Circle - Monthly donations

Don’t Shoot PDX - Monthly donations

OPB - Monthly donations

MN Public Broadcating - Monthly donations (we listen to the current all day long!)

Black Resilience Fund

Basic Rights Oregon

Oregon Culteral Trust

P:ear

Native Arts and Cultures Foundation (NACF)

Brown Girls Rise

Product or in-kind donations:

Transition Projects

Human Solutions

Dress for Success of Oregon

Pixie Project

If you live in the Portland, Oregon area and are interested in modeling for us the best way to get in touch is to DM us via IG @thunderpantsusa, you can also email info@thunderpantsusa.com attn: Brooke.

We hire independent illustrators/surface designers to create unique prints for us. Check out our Textile Designers page to find out more about them.

If you have experience in surface design, and are interested in designing a print for us, you can email info@thunderpantsusa.com attn: Brooke.

The label says wash cold and hang dry. That is the best way to care for cotton. Many people wash in warm and/or dry on low without issue. If you choose to do this you may get some fading in the prints (mostly the darker ones) as we use water-based dyes. PLEASE DO NOT WASH OR DRY ON HOT. Our cotton is sturdy, but the spandex might start to break down when hit with excessive heat. 

While we don’t require the factory to perform official audits, we are physically at the factory at least once a month picking up product. It’s only about 7 miles from our office and we have a very close working relationship with the owner and several employees. We have been in every part of the factory (it’s not very big), and can see our products being cut and sewn, so can be sure none of our production is outsourced. We are very proud to have found a factory to work with that shares our values and is so transparent. 

No, they are designed to sit in the natural crease of your leg, not below it. We find that our styles solve the issues that arise when wearing non-boyshorts (ie riding up, cutting into your leg, uncomfortable around your thighs). Our customers prefer wearing Thundies to other boyshort styles because they fix all those issues without the extra fabric.

Check out our Boxer Brief style for more of a "boyshort" fit.

Our Panel Pant styles come in both Original and Hipster versions but fit differently than the regular Original and Hispter style underwear. They are made with four panels, one front and back, and two side panels. This creates elegant style lines and is flattering on the body. The height of each stlye is the same, but the binding is significantly thinner! If you are used to the regualr, thicker binding, this thinner binding might feel tigher more constricting on your body. We would reccomend sizing up!

The Original, Hipster, and Sky Rise styles all have the same fit through the leg and bum with varying height. The Hipster is low waisted, the Original sits around the navel, and the Sky Rise is high waisted. These are our three wedgie-proof styles as the binding sits right under the bum and keeps them in place. The Original is by far our most popular style. If you like a low rise, the Hipster is for you. If you know you like a high waist, then the Sky Rise is best -and it is a true high waisted style. The Original (called the Original because it is the first style we designed and fancy it the perfect undie) is right in between. You may want to avoid the Hipster if you need a little extra coverage in the back as they can get a bit low back there and be in danger of slipping down. The waist can feel a bit small in the Sky Rise if you are built larger through the middle as it comes in to fit right at the natural waist -but alternatively is the least likely to ever roll down, so if you have trouble with undies rolling down, this might be a good option.

All of our undies are suitable for all genders. The briefs are designed with a woman’s body in mind, but we have plenty of men and non-binary customers who really like the fit. We have heard from men who wear the briefs that the Original is the best fit and you may want to size up. The Boxer Briefs are designed with all bodies in mind. They will lay flat or stretch to accommodate. They don’t have the binding around the leg, which some people prefer, but they may wonder around a little bit without the band holding them in place. This is the style for you if you really prefer a Boxer Brief to a brief.

That’s why we make Thunderpants with a decent amount of stretch so we can accommodate many different sizes and shapes. For the undies, the place they can feel a little tight is in the legs, so if you feel you are built bigger though the thighs definitely size up. If you like your undies snug and have leaner legs, go with the smaller size. Most of our customers are happier going up a size than down. In the other styles, you may opt to go down if you want a tighter feel or up if you want something loser. You may be able to wear either size because of the stretch, but prefer the fit of one over the other based on how you like your clothing to fit. 

Our Original, Hipster, and Sky Rise underwear styles are designed to fit a woman’s body, but we have many satisfied customers who do not order along gender lines. We also have a Boxer Brief that is specifically designed to be gender neutral.

We do not have gender specific styles but our Boxer Brief is designed to fit a man's body.

Yes, all Thunderpants products we sell are either made in Portland, OR at a local factory or in Salem, OR by a contract sewist. Our fabric is also knit and printed in LA, if you would like to learn more about our supply chain, visit that page here.

We try to make the color representation as close as possible but colors on screen can vary between computers.

All of our prints are limited edition and will sell out. If a print is very popular we may reprint or cycle it back in later with a color variation.

If your size/style is sold out in a certain print or solid, look for the "notify me" button where it says "sold out". If you see it, that means we will be restocking that item and you can sign up for an automated email when it is restocked by clicking on the button. If you don't see the "notify me" button, that means that we are not going to be restocking that item and it is sold out for good.

We add everything online as soon as we can - so keep checking in, sign up on our email list, and follow us on instagram to find out when new prints are coming. 

Yes! We offer a flat rate shipping to Canada and Mexico - you can find all the info here.

In addition to shipping to CA and MX, we ship to many other countries. You are responsible for all duties and taxes for your country, occasionally your package might be held at the post office until those duties are paid. If you can’t select your country at checkout, please send us an email and we will look into shipping to your country. 

If you live in Australia or Europe - visit the our sister companies: Thunderpants NZ and Thunderpants UK.

Shipping is $4.95 flat rate per order or an option of $9.95 priority shipping. Shipping to Canada/Mexico is calculated at checkout. We offer Free shipping on purchases over $70 in the United States.

During sales, our shipping is $4.95 flat rate for all purchases.

From your purchase it will be 5-7 business days unless you select priority shipping. We usually fill the order within two days of receiving it.

Please email us as soon as you discover a mistake at info@thunderpantsusa.com and if we haven't shipped it yet we are able to change it for you.

If you have already received your order, please see our refunds and exchanges page.

Please note we cannot exchange or refund any item that is not in ‘mint’ condition i.e. unworn, unwashed and with it’s original packaging unless there was a defect. We do try to be accommodating, so feel free to email us with questions that are outside what our policy covers.

We use 100% recycled poly mailers to help close the loop and lower our carbon footprint. We know they can be difficult to recycle. Our amazing packaging patners Ecoecnlose have tips on recycling and a take back program.

Click here to visit their website.

1. Resuse them! They have a second sticky strip to be used again.

2. Recycle them at any thin film designated recucling bin near you.

3. Mail them back to Econeclose to recycle (make sure to collect as many as you can before sending them back to lower your carbon footprint).