Smooth Duo Legging 21"
Smooth Duo Legging 21"
Smooth Duo Legging 21"
Smooth Duo Legging 21"
Smooth Duo Legging 21"

Smooth Duo Legging 21"

Regular price $124.00 Sale price $98.00
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3 in stock

Leggings with built-in underwear. Designed to stay smooth over your shape and mitigate panty lines. Stay in or move about in this perfect pair. Made in NYC.

  • Inseam 21" laying flat
  • Moisture-wicking
  • Four-way stretch
  • Soft and buttery hand feel
  • Opaque, squat-friendly fabric
  • Breathable 

Body: 88% Supplex / 12% Spandex. Lining: 90% Polyester / 10% Spandex

Machine wash. Tumble dry. Do not iron. Do not bleach.

Shown on 5'6" model

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. 

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. Liners may not be removed at any time. You’ll also need the receipt or proof of purchase. Undergarments must be worn to try on all merchandise. 

Start your return process here:

We want our customers to be happy with their new products! Let us know how we can better help with sizing and finding the right product for you by reaching out to

Size Guide

  US Size Waist (in) Hip (in)
XS 0-2 23 - 26 34 - 36
S 4-6 26 - 29 37 - 39
M 8-10 29 - 32 40 - 42
L 12-14 32 - 35 43 - 45
XL 16 - 18 35 - 38 46 - 48
XXL 20 - 22 38 - 41 49 - 51


*This chart is meant as guide for our customers. In an effort to help us make sure we get it right, please feel free to give us any feedback regarding its accuracy in relation to your experience with our product. 

Customer Reviews

Based on 25 reviews
Heather C.
Size: S
Height: 5' 3"
Fit: Correct fit
Activities: Lounging, Walking, Mat exercises or stretching, Low impact, Medium impact, Errands, Travel, Anything I'm doing!
I love these leggings!

These leggings are absolutely wonderful!

First: The Built-in Underwear
It's incredibly comfortable and fits like a second skin. One of my biggest pet-peeves is when legging become translucent when you bend over and I don't worry about that at all with these. Another benefit is that there's no camel-toe! I've never felt so secure in a pair of leggings.

Second: The Fit
The fit is beautiful I love where the waistline hits. I usually go for high-waisted leggings, and these are just slightly lower than my go-to height, but I think I prefer it because then the top of the leggings don't roll down when you're sitting.
I also like my leggings to be a little higher than my ankle bone. I don't know much about inseam lengths, and as I'm on the petite side I thought these would be the right ones. Again, these are a little shorter than I would normally go for, but they turned out to be perfect for my Pilates practice since then I can have skin contact when I place my magic circle on my ankles or when I have to grab my ankles for certain exercises, meaning that these leggings help to keep me in much more secure positions.

Third: The Fabric
It's absolutely wonderful. It's soft and doesn't bunch. There's the slightest sheen because of the elasticity, but it's very becoming. It always catches the right light and makes my legs look awesome! Just like the underwear, it fits like a supportive second skin and you forget you're wearing them.

Last: Their Performance
I have only done low and medium impact workouts with them so far, but they've been able to keep up for sure! I teach Pilates and need leggings that can move with me and not constrict my range of motion, and these leggings fit the bill! I'm looking forward to trying them out on a run and seeing how they withstand the friction. I'm also looking forward to the built-in undies on my run so that I won't have to keep readjusting my undergarments.

I highly recommend these and can't wait to try more of Meira Active's products!

Alicia B.
Size: S
Height: 5’2
Fit: Correct fit
Activities: Walking
Love these!

Extremely comfortable and great look!


I love the feel and fit of these leggings. I’ve been wearing them a lot post partum because they give me great support in the tummy area. They are a dream to workout in too! Will definitely be ordering more!

Keep it smooth

We got rid of your underwear's side seams and vertical back seams

Why you'll love this

You're a human who moves

Shaped not to interfere with how your body moves, our lining is there to offer another layer where comfort is key. High arches at the tops of the thighs leave bunching out of the equation. Next to weightless fabric is fit to stay smooth over your booty's shape.

We do your work

Good news - we picked out half your clothes. Your leggings and underwear are already paired and we're letting you know your butt's gonna look amazing. Now go live your life.