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BOOST™ Brief

Adjustable / Black / XXS
$30.00 USD $50.00 USD
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  • BOOST™ Brief
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  • BOOST™ Brief
BOOST™ Brief

Leakproof

BOOST™ Brief
$30.00 USD $50.00 USD
  • Absorbs 4-8 regular tampons
  • Adjust absorbency with BOOSTER™
  • Machine washable
  • Includes one BOOSTER™

Savings per wear: $4 | based on 8 tampons
Absorbency
ColorBlack

Brief Size Guide

Our Briefs are a high rise fit, we recommend basing your size off of your hip and waist measurement. Standing with your feet together, wrap a soft measuring tape around the widest part of your hip parallel to the floor. To measure your waist, take the measurement where your waist creases when you bend.

If you’re between sizes we recommend sizing up from your normal size. If you’re between an XL and a 1X note that the 1X will allow for a roomier fit through the waist. .

Hip Waist
XXS 30-32" 21-22"
XS 33-34" 23-24"
S 35-36" 25-26"
M 37-38" 27-29"
L 39-41" 30-31"
XL 42-43" 32-33"
1X 41-43" 34-37"
2X 44-47" 38-41"
3X 48-51" 42-46"
4X 52-56" 47-50"
5X 57-61" 51-55"


Shipping & Returns

Shipping

US & Canada

Order value Cost Delivery
Over $99 $2.99 5–7 business days
Under $99 $9.99 7–10 business days
Any order (VIP) $21.99 3–5 business days

International

Order value Cost Delivery
Over $200 $50 7–14 business days
$90–$199.99 $25 7–14 business days
Under $90 $15 7–14 business days

View full policy →

Returns

We accept returns of unopened, unworn, non-sale underwear within 20 days of delivery for store credit. Due to the intimate nature of our products, we are unable to offer refunds.

At this time, we are unable to accommodate exchanges.

All products purchased on sale are final sale and not eligible for return.

View full policy →
Pay with HSA/FSA at checkout

OEKO-TEX® certified

PFAS-Free

B-Corp certified

Details

Fit & Feel

Absorbency

4-8
tampons Absorbency level

Best for

Easy refresh

Value for money

Light to heavy flows

Overnight

Care instructions

Machine wash cold

No fabric softener or bleach

Dry on low heat

Fit + Coverage

High rise

Materials

BODY
48% TENCEL™ lyocell, 48% organic cotton, 4% spandex
LINING
86% OEKO-TEX certified, PFAS-Free*, recycled polyester, 14% organic cotton
LEAKPROOF CORE
64% OEKO-TEX certified, PFAS-Free*, recycled polyester, 15% polyester, 11% organic cotton, 10% TPU
BOOSTER
​65% OEKO-TEX certified, PFAS-Free*, recycled polyester, 24% polyester, 11% hemp

Diagrams

Front and back diagram
Gusset diagram

BOOST™ Adjustable Absorbency

Protection you can customize

Absorbs 4-8 tampons

Not every day requires the same level of protection. That’s why we developed BOOST™, our adjustable absorbency system.

BOOST™ allows you to customize protection using a removable absorbent BOOSTER™, adding capacity only when you need it.

What is a BOOSTER™

A BOOSTER™ is a removable insert shaped like a pad without wings that is designed to fit into our BOOST™ underwear.

How it works

BOOST™ can be worn with or without a BOOSTER™ for light or heavy coverage.

Adjust absorbency by sliding the removable BOOSTER™ into the front and back openings of the gusset.

How it performs

BOOST™ features our integrated three layer leakproof system to wick fluid away from the body and absorb up to 4 tampons worth of fluid.
Woman sitting on a windowsill holding a mug, wearing a light blue sweatshirt and Aisle period underwear in Espresso.

Why we made it

Adjustable absorbency means better comfort, better performance, and you need fewer products overall.

Made for Humans, By Humans

OEKO-TEX® certified

Our fabrics are certified free from harmful substances, gentler on skin, safer for long-term wear, ultimately, reducing irritation.

Stitched, not glued

Stitched seams hold up through 100+ washes. Bonded (glued) construction stretches out and breaks down over time.

PFAS-Free*

No PFAS or unnecessary chemical treatments in our leakproof layers, materials designed to be safe against your skin.

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