Thunderbird - Full Length Triathlon Leggings

$ 79.50 $ 99.00
Pay in full or in 4 interest-free installments of $ 19.87 with  Learn More

25% OFF w/code: SUMMERLOVE ★ Limited Time Only!

Final Sale - Not Eligible For Return

Ethically Made in USA, Muscle Control (Compression), Ultra Quick Dry + Breathable, UV Protection 50+ and Sunscreen Resistant

◇ Made with Italian Compression Fabric and run slim. For a more casual fit, we recommend going up a size.
◇ Flat-Lock Seams and a Unisex Long-Panel Gusset.
◇ Original Artwork by our female founder, Chriztina Marie.
◇ Perfect for high endurance activities and water sports (running, cross-fit, weight training, cycling, surfing, etc.)

Be sure to check our Comparison Guide to Learn More:

You May Also Like:

Custom Hemming Add-On
$ 5.00
Adjustable Mask - Thunderbird
$ 7.50
Thunderbird Top - Reversible
$ 56.50
zoomed in image of our Italian triathlon fabric with butterflies print
Italian Performance


Made with phenomenal Italian Performance (Compression) Fabric that was originally developed for Olympic athletes. Provides Muscle Support, is Ultra Quick-Dry, Breathable, and offers UV 50+ Sun Protection. Printed with a vibrant & eco-friendly digital dye-sublimation process. Perfect for high endurance activities and water sports: crossfit, running, weight training, cycling, surfing, etc. (70% Polyester, 30% Elastane)

Girl doing advanced compass yoga pose while wearing our full length triathlon leggings with moon print
Full Length Triathlon


Runs slim (compression fabric). Our Full Length Triatholon Leggings offers a Mid-Rise at approx 8.5" with a two-piece contoured waistband. Sewn with flat-lock seams at the front/back rise and inseam that eliminates bulkiness and aids against chafing. All of our Full Length Triathlon leggings have unisex long panel gusset and the full length can accomodate 30-35" inseam.

Photo of our female founder, Chriztina Marie, hand illustrating our Sugar Skull artwork.


Our leggings feature original artwork by our female founder, Chriztina Marie. It all starts with a spark of inspiration and pencil sketch that is scanned into the computer and perfected within photoshop. One design can often take up to 80 hours to complete from start-to-finish: it's all in the details.

Photo of our small design studio with sewing machines and our industrial heat press (her name is Jozie)
Where They're Made


Well, not really a factory ... more like a happy little werkshop ;) All of our Full Length Triathlon Leggings are made in-house in our small design studio in Monrovia, California. USA! We methodically cut, print and sew every single pair we ship by hand with love. Thank you for keeping our small business alive, xo.

Designed for a


All of our full length triathlon leggings feature a long panel gusset that is not only flattering for both men and women, but it also improves mobility.

Customer Reviews

Based on 4 reviews
Yoga Jersey style

The full-length Yoga pants are of the highest quality and fit according to the size chart. I find the pants to be exemplary and very stylish. I received many complements on the pants. I have always worn an under layer so as to avoid the VPL. (Visable penis line). However, they are heavy enough as compression pants that it may not be necessary. The quality of the workmanship is outstanding. These are the only yoga pants that I buy. Thank you all in the Eagles Nest.

Jill K.
My Favorites…I think!

These just might be my favorite of all my Werkshop leggings, I love them all but these are super special. Totally helps to smash a workout when you’re wearing a powerful pair of leggings with a Thunderbird and lightening crackling all over it. Talk about energy! Jaw dropping artwork, I love how the wings wrap around onto your butt Andy the feathers fan out to highlight your glutes. Talk about skillful artwork placement!

Celina P.
Badass birds

One of my new favorite prints from Werkshop! The quality is top-notch, just like all Werkshop items. But this print is just something else. The detail and colors are simply exquisite!

The unisex gusset can take some getting used to if you have a muscular booty and thighs, but trust me - it's so worth it when these beauties take to your shape.

Hope Y.
Never Enough...

I keep getting more Eagle Rock WERKSHOP leggings...I will never have enough! Love these, they 'make a statement' like so many of the designs, but quietly they've become my 'black' leggings to wear out and about! No other leggings fit like WERKSHOP--and yes, they do loosen with time.