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Pedal Through, by first-time film director and new mountain biker Analise. Follow her journey of self-healing and growth during a week-long bikepacking adventure through the Oregon backcountry.




With just enough padding to keep you comfortable in the saddle-but not so much that you look and feel bulky-the Foundations Liner Short glides smoothly under clothing or cycling layers. Made with ultra-high-wicking fabric and breathable mesh panels, this durable base layer efficiently wicks away moisture and helps reduce chafing, even on the sweatiest rides. Use the Foundations Liner Shorts to cushion your commute, buffer your MTB ride, or pad your Peleton workout. No matter where you are headed, we'll help you build your base. 

Make it a match set with our compatible Foundations Sports Bra. 



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Why We Made This

Foundations is our feminine solution to performance undergarments, and it all started with a hunt for the perfect cycling shorts. For most rides, cycling bibs and shorts are overkill in the padding department, but no chamois at all is just plain painful! We wanted something in between full-on bike shorts and unpadded Lycra, but we couldn't find our dream liner shorts anywhere. So we made our own! 


- 72% Nylon / 22% Elastane

- 4-way stretch

- Moisture Wicking

- Quick dry

- Breathable mesh details on side and back for       ventilation

- Medium Compression

- Seamless silicone gripper, eliminates rolling

- Hidden credit card pocket at interior waist

- Built in Chamois w/ smaller footprint, lower profile, less bulk

Size & Fit

5.5" inseam length

The Foundations Liner Short has a slim fit.  

Choose the size closest to your Hip.

If you are petite, size down. 

If you want a form fit, size down.  


Demi is wearing a size Medium and is:

5'8" / bust 33" / waist 25.75" / hips 37"

Athena is wearing a size Large and is:

5'10" bust 34" / waist 28" / hips 39"

Bianca is wearing size XXX-Large and is: 

5'10" / bust 45" / waist 40.5" / hips 50.5"  


Check out our Fit Guide for more detailed instructions, or pop your measurements into our fit calculator for a personalized recommendation!

Detail & Care

To get the longest life out of your garment, we recommend washing it in cold with a mild detergent, and hanging it to dry.


All orders are shipped free within the US

Machines is unable to offer international shipping at this time.


Sizing Calculator


For cycling bibs and shorts, the HIP MEASUREMENT is the most crucial factor. Measure around the WIDEST POINT of the hips/bum. If you are between sizes or petite (5'3" or under), we recommend SIZING DOWN for a compressive fit. A snug fit is crucial to performance. Check out our FIT GUIDE for more detailed instructions, or pop your measurements into the fit calculator above for a personalized recommendation! (Please note, the fit guide requires chest, waist and hip measurements.)