Built-in Thong Bike Shorts + Leggings (26") Bundle

Regular price $209.00 Sale price $149.00
Free Shipping

0 in stock

Smooth Duo® Built-in Thong Leggings and Bike Shorts were created to slay panty lines! Bundle includes one pair of our Built-in Thong Bike Shorts and one pair of our Built-in Thong Leggings so you'll always be prepared for the kind of day Mother Nature serves. Available in 21" or 26" legging lengths. Choose from Heather Sky or Heather Grey quick drying fabric. Hues chosen carefully to span across seasons and add freshness to your activewear wardrobe. With only the benefits of wearing underwear and none of the annoying details, these were crafted to lay smooth over your front, back, and hips and offer a favorable amount of support to your mid section. Quick drying fabric makes this all day style perfect for rainy (or sweaty!) conditions. Designed to lay smooth over your shape and offer extra support. No more camel toe. Stay in or work it out with this perfect bundle! Made in NYC.

  • High rise
  • Inseam 21" (measured flat)
  • Moisture-wicking
  • Quick drying
  • Four-way stretch fabric
  • Abrasion resistant
  • Static resistant

Heather grey leggings have a black thong. Heather sky blue leggings have a white thong with black liner.

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

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

Product images show 5'6" model.

*If between sizes, we recommend the larger size in this particular item. Need more guidance with your order? For more information get in touch with our support email address via the contact tab on our main menu.

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 support@meiraactive.com.

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

Be the first to write a review
Keep it smooth

We don't use side seams or a vertical back seam in our undies. We bring you our ingenious thong and comfy classic fit underwear built right into styles made to fit you and your life. We will never try to sell you a typical pair of tights.

Close up of women's hip and legs wearing smooth duo leggings with built-in underwear showing no panty lines or bunching. Snow covered ground with trees in the background

Why you'll love this

You're a human who moves

Shaped not to interfere with how your body moves, our built-in underwear acts as a lining to offer another layer where comfort is key. We always make sure there is no bunching or riding up. Next to weightless fabric is fit to stay smooth over your shape.

We do your work

Good news... Your leggings and underwear are already paired! You won't have to search the laundry pile or drawer again. Prefer going commando? Smooth Duo® leggings and shorts give you an unrestricted feeling of freedom yet let you reap all the benefits of undies.

named Best Squat proof workout leggings by forbes

Our Smooth Duo® soft black leggings with classic Built-in Underwear™ have been recognized by Forbes naming them Best Squat-Proof Leggings in 2022. We're always here for a good squat test.

Image of Forbes.com article showcasing Meira Active Smooth Duo Leggings with Built-In underwear being names the best squat proof leggings of 2022