Thalassa Seamless Leggings - Black

Where form meets function—introducing the Thalassa Seamless Leggings, engineered for uncompromising comfort and performance. These leggings feature a smooth, second-skin fit with zero front seams and a wide, no-dig waistband that hugs your core without squeezing. Whether you're chasing a new PR or flowing through yoga poses, you'll feel sculpted, supported, and totally unrestricted.

Made with sweat-wicking, ultra-breathable fabric, Thalassa Seamless Leggings move with you, not against you. The four-way stretch ensures flexibility in every direction, while the streamlined silhouette delivers a flattering, elongated look. Ideal for both high-impact training and low-key recovery days, this is your go-to legging for all things active.

Complete the energy set with the Thalassa Crop Top or Thalassa Sports Bra—both designed to pair perfectly with these leggings and power your every move with confidence and style.

- Soft & Second Skin Feel
- Made to last
- Performance fabric
- 4-ways stretch
- Breathable
- Sweat wicking
- Quick drying

If you don't absolutely LOVE your new activewear, just send it back within 30 days after you receive it, for a full refund!

✓ 30-day Money-Back Guarantee

✓ Hassle Free Returns

✓ World Class Customer Support

We were tired of buying activewear that didn't fit and having to pay additional return shipping costs and sometimes not even being able to receive a refund at all.

That's why we've decided to take full responsibility of our products and sizes, and include a 100% happiness guarantee. 

If you are not happy with your new product, return it for a full refund. Free of charge!
That is the Amelia guarantee. 

Our sizes matches the usual sizes you find at other stores. So we recommend that you go with your usual sizing. 

You can see the size chart by clicking the "Size Chart" link located right below the sizing selection (S, M, L, etc.).

Our activewear is stretchy and flexible so if you go with your usual sizing it should fit perfectly. In the rare case it doesn't, let us know and we'll help correct the sizing right away! 

- Free worldwide delivery when buying 2+ items
- Low flat delivery fee when buying 1 item
- Free returns & exchanges
- 30 day worldwide returns & exchange policy

In order to keep our products super affordable we use Economy Shipping (with Tracking) and ship straight from our fulfillment partner located close to our factories. Please allow 5-14 business days for your order to arrive.

Thank you for your patience. We promise it'll be worth the wait! 🌸

You will receive a tracking number to follow the journey of your new activewear, and you can always contact us using the contact form on our contact page. 

We're excited for you to receive your new activewear!