CORE:TX™

Leakproof Bikini 3 Pack

Name: Leakproof Bikini 3 Pack
Brand: Athleticus Research
Price: 92.0 CAD
Availability: InStock
Rating: 4.7 (285 reviews)

$92 $138

4.7

Rated 4.7 out of 5 stars

285 Reviews

Absorbency Medium

Size

Size Guide

Fit Tips:

If your body measurements fall on the borderline between two sizes, we recommend sizing up for a more comfortable fit. If your hip and waist measurements suggest different sizes, choose the size that matches your larger measurement.

How to Measure:

Bust Place the measuring tape around the fullest part of your bust.

Waist Stand up straight and place the measuring tape around your natural waist.

Hips Measure around the fullest part of your hips.

Inseam Measure from the crotch seam down to the hem of the pants.

Size Chart

	Pant	Waist (in)	Hip (in)
XS	00-0	20"-23"	28"-31"
S	0-2	24"-27"	32"-35"
M	4-6	28"-31"	36"-39"
L	8-10	32"-34"	40"-42"
XL	12-14	35"-37"	43"-45"
XXL	16	38"-40"	46"-48"

Item is in stock Only 0 left in stock Item is out of stock Item is unavailable

Stay confident in every situation with our CORE:TX™ Leakproof Bikini, perfect for tackling workouts, commuting, or just relaxing on your off days.

Choose from CORE:TX™ 3.0, 5.0, or 9.0 to suit your specific needs. Whether you're looking for light protection during your low-flow days or maximum coverage for heavier moments, we've got you covered.

Wash with like colours. Hand wash or machine wash in cold water. Avoid washing at high temperatures to prevent peeling of adhered fabric. Do not use bleach or fabric softeners. Use wash bag. Do not tumble dry.

Body: 71% Nylon, 29% Spandex
CORE:TX™ 5.0 Gusset Layer 1: 91% Polyester, 9% Spandex
CORE:TX™ 5.0 Gusset Layer 2: 89% Polyester, 11% Spandex
CORE:TX™ 5.0 Gusset Layer 3: 71% Nylon, 29% Spandex, PU Film

Mid-rise, moderate coverage with a waistband that rests below the natural waistline. Fits snug at first but conforms to your body with wash and wear.

Model is 5'8"/173cm wearing a size S.

45-Day Risk-Free Trial 45-Day Risk-Free Trial

Experience CORE:TX™ Leakproof Underwear with confidence—enjoy a 45-day money-back guarantee.*

How It Works:

Choose Your Style: Add one CORE:TX™ Leakproof Underwear to your cart - available in Bikini, Boyshort, High Rise, or Thong, in any size and absorbency.
Checkout: Complete your order with Standard or Expedited shipping.
Try It: Experience the comfort, quality, and convenience of our CORE:TX™ Leakproof Underwear.
Get a Refund: If unsatisfied, request a refund (excluding shipping) within 45 days of receiving your order through our Return Center. You keep the underwear.

*Terms and conditions apply. Learn more here.

Shipping & Returns Shipping & Returns

Free standard shipping for orders over $50.
Within 30 days of delivery, you may return or exchange. The underwear item must be unworn, unwashed, and in its original condition with all tags and packaging intact.
Please see our Return & Exchanges policy here.

Discovery Kit

$98 $189

Leakproof Active Shorts 5"/7"

XS 5"

$125

Organic Cotton Wash Bag

$15

Bought together

Absorbent

Moisture-Wicking

Worry-Free Backup

Sustainable

Razor-Thin Liquid Shield.

Razor-thin, and unimaginably over engineered, CORE:TX™ Leakproof System keeps you confident and comfortable all day long.

CORE:TX™ 3.0 shown.

360 Liquid Barrier.

Utilizing advanced water-proof stitching techniques and wrapped edges, the 360 Liquid Barrier provides double the leakproof performance while staying soft and comfortable.

RINSE. WASH. REPEAT.

Caring for your CORE:TX™ is simple. Quick rinse with cold water to remove any stains. Machine wash cold on a gentle cycle. Air dry to ensure longevity.

Reality Check.

Single-use products use over one million litres of water for production and generates over one million tons of waste each year. This waste can stay in landfills for up to 800 years.

Our commitment to the environment.

Caring for the environment is a responsibility we all share. Our biodegradable packaging ensures that once it’s done protecting your underwear, it returns to the earth without leaving a lasting footprint.

Bundles and Kits

Love your underwear and want more? Looking for different absorbencies to complete your set? Check out Bundles and Kits for tailored sets and discounts.

Visit Bundles and Kits

4.7

Rated 4.7 out of 5 stars

Based on 285 reviews

Total 5 star reviews: 214 Total 4 star reviews: 61 Total 3 star reviews: 10 Total 2 star reviews: 0 Total 1 star reviews: 0

96%would recommend these products

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285 reviews

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Lulu
Verified Buyer
2 days ago
Rated 4 out of 5 stars
Love the Moderate Protection
lly love the 5 absorbency for my mid range days. It’s just the right amount of protection and stays in place all day.
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Nina
Verified Buyer
4 days ago
Rated 4 out of 5 stars
Great for Running Errands with Kids
As a mom of two young kids, I’m always on the go. I needed some underwear that I could rely on while running errands, chasing after the kids, or doing household chores. This bikini underwear has been a lifesaver! They’re so comfortable , I barely notice them under my clothes. The fabric is soft and stretchy, and it never rides up or bunches, which is exactly what I need when I’m constantly moving. Plus, they’re breathable enough for warmer days, and I can wear them for hours without feeling uncomfortable. I’ve even worn them during quick trips to the store and felt completely secure.
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Ames
Verified Buyer
5 days ago
Rated 5 out of 5 stars
Barely Noticeable
The gusset padding is so thin, it feels like nothing at all. It’s there for protection, but it doesn’t feel bulky or uncomfortable.
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Leakproof Bikini 3 Pack

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