This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

FREE SHIPPING on all US orders over $70

Shopping Cart

Your cart is empty

Continue Shopping

Original Limited Edition Mineral Rust Dye

$ 36.00
Select my color — Mineral Rust Dye

Made in USA

Organic Cotton


Teresa is the owner of Texture Clothing, in Bellingham, WA. Texture was born out of the desire to create clothing that fit bodies with curves, align with her eco-friendly and intentional values, and create one-of-a-kind clothing using various dye techniques. In our collaboration with Teresa, she used a mineral dye method with iron rust. Iron rust creates colors that blend well together and create interesting patterns. It adheres to cloth well and doesn’t fade out like other natural dyes. During this collaboration, Teresa was able to expand her comfort zone by working with a larger quantity of garments. You can find her own small batch work here.

A little about the process of mineral dying with iron rust: First, the garments are scoured (washed) to get rid of any residue from the knitting process. Then, they are soaked in a both of rusty water and hung to dry. After being completely dry, the garments are then wrapped with metal wire (iron) in various sections. Then each item was sprayed with tannin in the form of black tea. They sat for a week, allowing the rust to take action, spraying them with tannin in places where the rust wasn’t forming. Finally, each garment was untied and washed for a final time.


We recommend washing your dyed items with like-colors for the first few washes, then as normal.

No exchanges or returns on limited edition pairs. Please message us with any questions about fit if this is your first pair of Thunderpants! 

The Original comfy undies that don't go up your bum. In sizes SM - 4XL, this very comfortable full brief sits in the natural crease at the top of the leg and usually hits just below the belly button. The Original is a higher rise, but not a high waisted undie.This is our most popular style and easily fits many body types. 

Thunderpants 90% organic cotton/10% spandex fabric is sturdy, very stretchy, and has great retention to give our garments just enough stretch and bounce back. It helps the undies to stay up and on, and the other garments to keep their shape without sagging or bagging. We use the same soft organic cotton blend to cut our binding into a wide strip instead of using elastic so there is never any irritating elastic against your skin. All the garments are made locally and lovingly in Portland, OR.

Make sure to wash these alone or with like-colors for the first few washes (don't wash them with whites right away!). The dyeing process does leave a faint scent, this is not scented detergent, we only use un-scented when washing before and after dyeing. The smell of the dyeing process will fade over time.

To preserve the vibrant colors and life of the fabric we suggest you do not soak or bleach your Thunderpants items. Use a gentle detergent in a cold machine wash and dry your Thunderpants on the line (they will survive drying on low, but may fade a bit and cut down slightly on longevity). If you do wash warm or dry, make sure not to use too much heat as heat will break down the spandex! 

Original Limited Edition Mineral Rust Dye

$ 36.00
Customer Reviews
4.9 Based on 341 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review

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:
Kelsey H.
United States


Everything Thunderpants makes is incredible 11/10 would rec

Jacquelynn Y.
United States United States

My faves

Something about these make me feel pretty and secure.

Sarah K.
United States United States

Beautiful and comfy

I love these undies! Cozy, comfy, all day wearable.

Gregory R.
United States United States

Fantastic fabric * Custom Feel

The best cotton feel and great sizing options. They don't wedge or move around. Controls moisture while being light to the touch. Thanks

Jenny B.
United States United States

Thank you for cute and comfortable!!

As always excellent quality and fit. Luv thundies!!!