Frequently asked questions

Are ID Fitness leggings squat-proof?

Yes. The Blackline leggings are knit to be fully opaque — zero transparency through squats, lunges, and every rep after.

Read our full guide: how to tell if leggings are squat-proof

What are Blackline leggings made of?

85% polyamide and 15% spandex, knitted seamless and woven on a loom in Brazil.

What does "woven on a loom in Brazil" mean?

Every Blackline piece begins as an original sketch, then is knitted seamless and woven on a loom in Brazil. Designed in Austin, made for every role you play.

How do I choose my size?

The Blackline set is available in S and M — you can mix top and legging sizes for your fit.

Do you ship internationally?

We currently ship within the United States only. Complimentary U.S. shipping on orders over $75.

What is your return policy?

Our policy lasts 14 days from delivery. Items must be unused and in the same condition you received them. Customers are responsible for any additional shipping costs.

How do I wash seamless leggings?

Machine wash cold, inside out, with like colors. Skip the fabric softener and tumble dry low — or line dry to keep the seamless knit at its best.

Do compression leggings help circulation?

The Blackline’s targeted compression is designed to sculpt and support — a smooth, second-skin fit through workouts and everything after.

What keeps the waistband in place?

A high-rise waistband, knitted to stay put through squats, sprints, and everything after.

Seamless vs. seamed — what’s the difference?

Seamless leggings are knitted in one piece — no side seams to chafe or dig. The result is a smooth, second-skin feel that moves with you.

Where are ID Fitness pieces designed and made?

Designed in Austin, Texas. Woven on a loom in Brazil from an original sketch.

What’s the best legging for leg day?

The Blackline: squat-proof, high-rise, with targeted compression through the waist and glutes — built for squats, lunges, and everything after.

What thickness is the ID yoga mat?

4.5 mm (0.18") — stable and grounded, with just enough cushion.

Is the yoga mat non-slip on both sides?

Yes. The premium PU top keeps you steady through sweat, and the natural rubber base grips the floor.

How do I clean my yoga mat?

Wipe with a damp cloth and mild soap after practice, then air dry flat. Avoid harsh chemicals.