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Last Call

Leakproof UltraThin No-Show Bikini - Last Call

$18.90 USD

$27.00

30-40% off

Absorbs about 2.5 super tampons

Invisible under clothes

Moderate protection without the bulk

Machine washable

Adiya has 40” hips and wearing KNIX L | Indigo

Adiya has 40” hips and wearing KNIX L

Adiya has 40” hips and wearing KNIX L | Indigo

Adiya has 40” hips and wearing KNIX L

Adiya has 40” hips and wearing KNIX L | Indigo

Adiya has 40” hips and wearing KNIX L

Adiya has 40” hips and wearing KNIX L

Color: Indigo Limited Edition

Size:

True to Size

Size:

Size and Fit Guide

Free Shipping on orders $100+

Shipping

Shipping

Processing Timelines

Please allow 1-2 business days for our warehouse team to pack and ship your order. During peak periods such as sales, holidays and product launches, please allow up to 4 business days for us to process your order. Once an order is placed, we cannot guarantee any address updates, order changes or cancellations. Orders placed on Friday after 1PM will not be shipped until the following Monday.


Split Shipments

Most orders will ship from a single warehouse. However, we occasionally ship from a combination of warehouse locations, so you may receive your order in multiple parts. If items from your order ship in separate packages, we’ll send you tracking information for each package when it becomes available.

Delivery Timelines

For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines do not include processing times. See above for details. All transit times are measured in business days which are Monday-Friday, excluding holidays.

Please note, all shipping timelines are estimates and are not guaranteed.

We are not able to ship to US territories (including Puerto Rico, U.S. Virgin Islands, Guam, Northern Mariana Islands and American Samoa) at this time.

Last Call Return Policy

Sale & Last Call

Our Sale Policy

Here's how returns and exchanges work for sale items.

  • Items discounted 30% or less are eligible for a size exchange or store credit.
  • Items discounted above 30% are final sale. No refunds, store credits, or exchanges.
  • Not sure where your item lands? Chat with us and we'll check for you

Still have questions? View our full policy here.

Rewards Members Earn 18 Points

"These are my favorite of all the period underwear styles I have tried, and I now own enough for a full cycle of wear."

- InStyle

Product Description

These underwear feature our buttery soft fabric and offer medium coverage for the hips and bum. Great for leak protection, the ultra-thin liner absorbs about the same as 2.5 super tampons or 1 regular pad’s worth. Get the protection you want from periods and light bladder leaks while feeling comfortable and worry-free.

Comfort-First Fit

Bikini silhouette with a classic mid-rise fit, medium hip and bum coverage.

Worry-Free Protection

Our newest leakproof innovation provides more absorbency without the bulk. Patented 360 LeakSeal™ technology locks in leaks at every edge.

Moderate Absorbency

Absorbs 2.5 super tampons worth of liquid—perfect for moderate flow days, light bladder leaks, and sweat. The carbon cotton gusset top layer keeps you dry.

No-Show Style

Buttery-soft and smooth fabric gives a seamless look and feel. Disappears under clothes, even leggings.

Easy to Wash

Machine washable, just like your regular underwear.

Zoom

Adiya has 40” hips and wearing KNIX L | Indigo
Adiya has 40” hips and wearing KNIX L | Indigo
Adiya has 40” hips and wearing KNIX L | Indigo

How to Choose?

Essential

  • Days you don’t need leak protection. Everyday freshness and moisture wicking.
  • tsp
    0 tsp

Heavy

  • Extra peace of mind. For the first days of your cycle, light bladder leaks, or a full night's sleep without a leak.
  • tsp
    about 8-14 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 4-7 super tampons
  • cup
    about 1.5-3 menstrual cups

Light

  • Daily freshness. For sweat, discharge, period spotting, or backup protection.
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

  • For mid-cycle flow, surprise cough or sneeze leaks, or a really sweaty spin class.
  • tsp
    about 4-8 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-4 super tampons
  • cup
    about 0.5-3 menstrual cups

Ultra

  • Ultimate peace of mind. For the heaviest period days, light bladder leaks, unexpected postpartum flow, or overnight protection.
  • tsp
    about 15-20 tsp
  • pad
    about 1.5-2.5 super pads
  • tampon
    about 7-11 super tampons
  • cup
    about 2-3 menstrual cups
4.4
Rated 4.4 out of 5 stars
Based on 723 reviews
Total 5 star reviews: 519
Total 4 star reviews: 83
Total 3 star reviews: 46
Total 2 star reviews: 33
Total 1 star reviews: 42
What our customers are saying
Customers say these period underwear are comfortable and provide excellent protection without the bulkiness of traditional pads. Many appreciate the thin, no-show design that works well under clothing and the stylish patterns like polka dots. Users frequently mention the confidence and peace of mind these provide during periods, workouts, and daily activities. Several note they're particularly good for teens and lighter flow days. However, common concerns include sizing inconsistencies, with many finding recent purchases run smaller than expected. Some mention the front coverage could be longer, and a few experience issues with leg holes being too tight. Despite sizing challenges, most customers praise the comfort, absorbency, and quality of the product.
85%would recommend these products
FitRated -0.2 on a scale of minus 2 to 2
ComfortRated 4.5 on a scale of 1 to 5
EffectivenessRated 4.5 on a scale of 1 to 5
Keywords
Keywords
Rating
Ratings
Height
Height
How do you use your Leakproof?
How do you use your Leakproof?
Usual Pant Size
Usual Pant Size
723 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Leakproof Ultra thin bikini

    Great fit, smooth. No worries of the little leaks!

    AB
    Audrey B.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini 3-Pack - Last Call
  • Rated 5 out of 5 stars
    14 hours ago
    Love, love, love them

    The ultra thin no-show is sooo comfortable that you don't even realize that you have them on. These are my favorite.

    RG
    Robyn G.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini 3-Pack - Last Call
  • Rated 5 out of 5 stars
    19 hours ago
    love love love it!!!

    always as I expect it, correct sizing and fabric make it my go-to

    JM
    Jude M.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini - Last Call
  • Rated 5 out of 5 stars
    2 days ago
    Leakproof backup

    I use these alone some days and other days as backup. They usually last a year or more depending on whether I dry them a lot or hang them to dry.

    AR
    Ashley R.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini 3-Pack - Last Call
  • Rated 2 out of 5 stars
    3 days ago
    Sizing

    These fit smaller than the bikinis in cotten or the briefs. They squeeze my body. Maybe sized wrong? Cotten one is underneath. Maybe I’ll loose weight?

    RH
    Robin H.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini 3-Pack - Last Call
  • Rated 5 out of 5 stars
    5 days ago
    5 Stars

    Interesting pattern -I love the leakproof bikini. The new improvements to the gusset are fantastic! They last longer! Now I need a new reason to buy new patterns. 😉

    K
    Kirsten
    Reviewing
    Leakproof UltraThin No-Show Bikini
  • Rated 5 out of 5 stars
    5 days ago
    5 Stars

    Purples are my favorite color. I love adding this hue! I wear the leakproof bikini exclusively.

    K
    Kirsten
    Reviewing
    Leakproof UltraThin No-Show Bikini
  • Rated 5 out of 5 stars
    6 days ago
    Loved the No-Show Bikini

    Fit so comfortably and I didn't leak at all!

    LC
    Lana C.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini
  • Rated 5 out of 5 stars
    6 days ago
    PERFECT!

    definitely feel like period underwear don’t get me wrong but they are so soft and thin and comfortable

    KS
    Kenna S.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini
  • Rated 5 out of 5 stars
    1 week ago
    Love these.

    These work and look great. I live in leggings all the time and they don’t show at all. Love having just that extra comfort too.

    MM
    Marsha M.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini - Last Call
  • Rated 5 out of 5 stars
    1 week ago
    Saved my pickleball game!

    Leakproof undies work well for giggles and athletic pursuits. I sweat too much for leakproof pads to stick in place. Real game changer.

    KP
    Kindle P.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini
  • Rated 5 out of 5 stars
    2 weeks ago
    Love them

    I always look for the packs and I love the colors. I wish there were colors and patterns like this in the cotton. This is a great set.

    CT
    Concetta T.
    Verified Buyer
    Reviewing
    Leakproof UltraThin No-Show Bikini 3-Pack - Last Call

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