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779 total reviews

Aisle

BOOST Boxer

BOOST Boxer

Buy 3+ & Save Up to 15%
Size
Color:
Classic boxer brief with bold statement waistband & full-coverage leak protection.

Details

Includes a bonus absorbency booster for heavy days. Tuck ends into pockets & bleed on.

Absorbency

Holds 8+ tampons worth with our booster. Surf that crimson wave.

Materials

Body: 48% TENCEL™ lyocell, 48% organic cotton, 4% spandex
Gusset: 90% Truetex™ (88% recycled polyester, 12% organic cotton), 10% TPU
Lining: 86% recycled polyester, 14% organic cotton
Booster: ​65% recycled polyester, 24% polyester, 11% hemp
All materials are OEKTO-TEX certified and lab tested for PFAS. No detectable levels of PFAS to 1 part per million.

  • Made with TENCEL & organic cotton
  • Machine wash & dry safe
  • Replaces 100+ disposable products
View full details

Boost the Absorbency

Each pair of Aisle Boost underwear comes with a removable absorbency booster that adds an extra 4 tampons of absorbency. It's an innovation that sets these period underwear apart from the rest.

For heavy flow-ers there's no need to change your undies part way through the day, just tuck a Booster in and swap it out as needed.

Made with TENCEL™

The fiber that powers our period underwear. One of the most sustainable materials in the world - TENCEL™ Lyocell - is biodegradeable, highly breathable, less susceptible to odour-causing bacterial growth, and absorbs 50% more than cotton.

Our Tech

Featuring Truetex™ Fabric Technology

We developed our own custom blend of materials to create a gusset that's moisture wicking, super absorbent & leakproof without the use of harmful chemical finishes. Our undies keep absorbing, wash after wash after wash.

Learn More

FAQ

How do your period undies work?

Aisle undies feature a specially engineered lining that combines super-absorbent Truetex™ technology with a leak-proof lining to keep you dry and feelin’ fly.

How much fluid do they hold?

8X as much as a standard disposable! Our undies absorb 4 tampons worth of fluid on their own, or 8 tampons worth when you wear with the included booster.

Do I need to wear a pad or tampon with them?

Nope! Our undies were built to completely replace pads and tampons. They make great backup protection with tampons or menstrual cups, too.

What does the booster do?

Our undies absorb 4 tampons worth of fluid on their own, but if you need a little extra you can add the optional booster for an extra 4 tampons worth. Just tuck the ends into the slits at either end of the gusset.

How do I wash my Aisle undies?

It’s not that complicated - our undies were made to fit into your regular laundry routine. Just rinse out in cool water, then wash and dry with your regular laundry. As with any garment, wash with like colors.

Real reviews from real people

average rating 4.5 out of 5
Based on 779 reviews
  • 5 Stars
    540 Reviews
  • 4 Stars
    140 Reviews
  • 3 Stars
    60 Reviews
  • 2 Stars
    22 Reviews
  • 1 Star
    17 Reviews
90% of reviewers would recommend this product to a friend
Absorbency
Rated 4 out of 5
Comfort
Rated 4 out of 5
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Customer photos and videos
779 Reviews
Reviewed by Rachel
Verified Buyer
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Flow
Moderate
Height
5'6
Size
3X
Rated 5 out of 5
Review posted

Comfortable and work great!

I am autistic and have a lot of sensory issues around my period, and this is by far the most comfortable solution I've found! They're super soft and keep everything dry and hold up great even after multiple uses and washes in a washing machine.

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Absorbency
Rated 5 out of 5
Comfort
Rated 5 out of 5
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Was this helpful?
Reviewed by Natalie P.
Verified Buyer
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Flow
Heavy
Height
5'5
Size
L
Rated 5 out of 5
Review posted

I made the right choice

I was honestly a bit of a skeptic with period underwear. Since finding out about toxins in tampons I’ve been experimenting with different options and I think the period underwear is the answer! I wanted something good quality that would last as long as possible and that didn’t contain any forever chemicals. I found aisle in my searches and these underwear exceeded my expectations. I really don’t like pads because I feel like they don’t breathe, they’re uncomfortable, and sometimes would cause odour. These underwear are cotton and they’re super comfortable. I don’t notice any odour and I can go about my day worry free with the boost. I don’t have to worry about changing anything the entire day and I honestly didn’t really feel like I was on my period. I already ordered one more pair of underwear in a different style. Worth the purchase for sure!

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Absorbency
Rated 5 out of 5
Comfort
Rated 5 out of 5
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Was this helpful?
Reviewed by Jewel
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

Soft and comfortable

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Reviewed by Keelia A.
Verified Buyer
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Flow
Heavy
Height
5'10
Size
M
Rated 5 out of 5
Review posted

Worth every penny

Buying these boxers was an investment, because they're so much more expensive than the cheap underwear I could get otherwise, but omg they've truly been worth every penny! I've had them for over a year now and they still look and feel brand new, and they've never leaked. They also are bizarrely flattering, like that's not why I bought them but it's nice that they make me feel like I look good too lol. The practicality of being able to dry them in the dryer without having to line-dry them is amazing. I really can't praise them enough, they're my favorite items of clothing I own and I wish everyone who gets a period could experience how wonderful they are!

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Absorbency
Rated 5 out of 5
Comfort
Rated 5 out of 5
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Was this helpful?
Reviewed by Samantha P.
Verified Buyer
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Flow
Heavy
Height
5'9
Rated 5 out of 5
Review posted

Comfy

Surprised by how comfortable these were. Would almost wear them on non period days haha

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Absorbency
Rated 5 out of 5
Comfort
Rated 5 out of 5
Fit
Rated 0 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large
Was this helpful?