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Aisle

BOOST Boxer

BOOST Boxer

"I can wear them with no pad or tampon freely with no fear of leakage even on my heaviest days." ★★★★★

Regular price $52.00
Regular price Sale price $52.00
Sale Sold out
Size
Color: Green
Classic boxer brief with bold statement waistband & full-coverage leak protection.

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

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

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
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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.

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.

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

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.

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 810 reviews
  • 5 Stars
    554 Reviews
  • 4 Stars
    145 Reviews
  • 3 Stars
    69 Reviews
  • 2 Stars
    25 Reviews
  • 1 Star
    17 Reviews
89% 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
810 Reviews
Reviewed by Aly
Verified Buyer
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Flow
Moderate
Height
6'0
Size
3X
Rated 5 out of 5
Review posted

Plus Size & Autistic Approved!

Where has period underwear been my whole life?? I guess it doesn’t matter now that I’ve discovered Aisle! I’m plus size and autistic, so it’s incredibly hard to find underwear that doesn’t give me sensory issues (especially on my period). These are near perfect. I bought one pair to start and used them on the first day of my period. On the second day I had to switch back to regular underwear with a disposable pad and it was such a sensory nightmare—the pad bunched up and shifted so I bled through my undies, then I grabbed a different pair only to find out the pad wouldn’t stick to the fabric—many tears and blood were shed and my only regret was not buying more Aisle.

PROS:

- The waistband is soft and stretchy while staying in place

- Tencel material is so soft

- LOVE the extra long padding front and back, it gives me so much peace of mind while sitting or sleeping

- The open gusset with pocket for a booster is genius ✨

CONS:

- Wish the rise was just a tad longer in the front to help cover my belly a bit more, but I’m 6’ tall so that probably won’t be an issue for most

- I wish the gusset part that touches my skin was pure cotton and not polyester :(

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Absorbency
Rated 4 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 Julie A.
Verified Buyer
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Flow
Moderate
Height
5'6
Size
M
Rated 5 out of 5
Review posted

I love these! However...

I love these! However, the liner inserts that hold "4 tampons worth" I don't believe. I actually have to wear 2 liners at once and bleed through them like crazy even on my light days when I'm not heavy causing me to change them frequently (like every hour). However, the material the actual underwear its-self is phenomenal. When it bleeds through both pads, it doesn't bleed through the underwear portion.

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Absorbency
Rated 2 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 Amanda T.
Verified Buyer
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Flow
Moderate
Height
5'9
Hip
37" - 38"
Size
S
Rated 5 out of 5
Review posted

Absolutely love these!!

I cannot get over how comfy these boxers are, I was literally just kicking my feet in bed because I'm so excited to not be wearing a thick pad to bed LOL.

I saw some negative reviews about the lack of stretch in the leg seams and about how these feel like a diaper. I could not disagree more. Maybe the design has been updated since those reviews because these seems are VERY stretchy!!! And the thing I specifically love about these boxers is that I don't feel like I'm wearing a diaper whatsoever. Especially compared to other brands!!

I'm 5'9", 120lbs and my hips are 37". I got these in a size Small. They aren't too tight at all and I will definitely have room to gain weight without needing to size up because of how stretchy they are

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Absorbency
Rated 4 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 Lauren S.
Verified Buyer
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Flow
Very Heavy
Height
5'3
Hip
35" - 36"
Size
XS
Rated 5 out of 5
Review posted

A dream come true

I am 4 months in…

And so grateful for these comfortable, clean, and sustainable undies! They are a huge step in pampering my powerhouse body’s monthly refresh.

Highly recommend 👍

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Absorbency
Rated 4 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 Makenna P.
Verified Buyer
BOOST Boxer
Reviewing
BOOST Boxer
I recommend this product
Flow
Moderate
Height
5'4
Hip
39" - 40"
Size
L
Rated 5 out of 5
Review posted

AMAZING Period Wear!

This underwear is fantastic for those wanting to switch to a more sustainable form of menstrual wear! Having heard about this company on a recommendation from the Sierra Club, I know the material is sustainable, free of PFAS and toxic chemicals, and comes from a reliable and eco-conscious company. The underwear itself also lives up to its promises! The quality is in every stitch and thread of material. I feel so comfortable and protected when I wear these. You can barely tell you’re wearing period underwear. They fit well too and the sizing chart works like a charm. The fabric is SO soft! I don’t get sweaty or feel sticky when I wear these either; they wick away the blood and sweat like magic! I’ve worn them on my heaviest days and had absolutely no issues. I don’t think I’ve even come close to the capacity either. Changing the booster is super easy and it doesn’t bunch when you stretch the booster out all the way when inserting them in the slots. I also find it super convenient that I don’t have to wear the booster if I’m out of clean ones. The waistband is broader than the hipster style and doesn’t dig in at all. It might roll over a bit but it doesn’t bother me. The legs can roll up a bit, especially after pulling your pants back up after going to the restroom or something, but it’s easy to fix and doesn’t happen any other time. They do not dig in either and are unbelievably comfortable. I usually wear these during the first couple days of my cycle because they offer more…

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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?