High Waist | MARA Basewear Bottoms

High-Waisted Underwear and Swim Bottom

★★★★★ (21)
The MARA High Waist is our most universally flattering full-coverage underwear that doubles as a swimsuit. No matter what movement or outdoor environment you get into, you'll feel comfortable, confident, and cute.  Basewear Bottoms will become the only underwear you need to pack when you head out for travel, backpacking, or just a weekend camping trip. They're quick-drying, light, and comfortable and they won't slip down if you happen to jump off a cliff into a big alpine lake.

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Free US Shipping + Exchanges.

Fit & Exchange Policy

Perfect Fit Guarantee: Our 100% all-women team has fit-tested every single size we create on as many body types as we can find: from compact and muscular to full and curved. Wear it in the wild - we accept exchanges at any time.

Exchange Policy: Try it on, worry free. Exchanges are free and easy: we'll pay the shipping and our women run team will do everything we can to help you get the right size.

What is Basewear?

Basewear (n.): Baselayer + Swimwear

So what’s with the word “Basewear”? We made it up. Our idea for wearing one single underlayer that could perform both on land and in the water didn’t fit into any other clothing category - so we made a new one.

Not only will you be prepared for any adventure (land or sea) you’ll stay so comfy you won’t even know it’s there.

Underwear you can swim in.

Everything you need to know about Basewear Bottoms.


Join the women who have left uncomfortable under layers behind.

Don your Basewear and get through any of life's adventures feeling confident and comfortable.

Don't take it from us, read the Rearviews!

I literally live in these. The new bottoms have become my first go to grab and I am slowly filling out enough to swap out all old ones. For someone who takes in ALL details/senses at all times, this takes just one more thing out of that removing just one more layer of stress which is crucial in my ability to function in life.
— Jessica (TK Supporter)
Basewear tops and bottoms are great for outdoor activities: climbing and hiking. I’ve also just started wearing the bottoms always because they are high waisted and most of my pants are high waisted so they don’t fall down under my jeans and that is lovely 👍🏼
— V.M. (TK Supporter)
Basewear Tops are for weekends, adventures, bike rides and hiking. Bottoms: I love them for airline travel and managing sweat. Any time I know managing sweat is going to be a problem I wear them. I am also using the High Waist and Crop Top now as a swim suit.
— Ashley (TK Supporter)
Basewear is comfy running and climbing. The band isn't so tight that it leaves marks or gets uncomfortable after a long time. The bottoms are just really cozy.
— N. (TK Supporter)


Need an different size? No problem.

1. Get a Free Shipping Label

Start an Exchange. We'll email you a complimentary shipping label, on us!

2. Drop it in the Mail

Print your label and stick it on your re-usable packaging. Drop it at your nearest mail box.

3. Get your New Item

Yep, that's it! Our team will handle the rest and your new item will arrive as soon as possible.


How should I figure out my size?

Measure your perfect fit at www.terakaia.com/find-my-bottoms-size . If you are in between measurements, pick based on your preference! Do you like a breathable fit or a snug fit?

How will I know if I ordered the right fit?

We are finding most people fit a spectrum of sizes in the MARA High Waist Bottoms. If the bottoms feel loose you will probably want to size down. If they fit comfortably that is most likely your size but you could also size down for more of a tighter shapewear effect.

Will my MARA bottoms be the same size as my TOURA bottoms?

Possibly. With the higher waist on the MARA bottoms we are finding most humans are a size down from their TOURA Brief size.

Don't forget a Basewear Top!

The most comfortable sports bra, ever. Our customers have replaced all their regular bras and now only wear Basewear tops.