This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Fitting Guide

We've created the size charts below to help you easily see the right size for you.

If in doubt or between sizes we recommend to size down in our underwear, our fabrics are stretchy! But, if anything's not quite right our first fit promise means you can return for a full refund or exchange on your first pair, so you can find the fit and style that's best for you.

One Essentials Womens Sizing chart
One Essentials Mens Sizing chart
One Essentials Unisex Sizing chart
Measure for your correct size

How do I measure?

Waist

Find the narrowest part of your waistline, often in line with your belly button and wrap the tape measure around.

Hips

Start with the hips, for all our style the hip measurement is the most crucial. Find the fullest part around your hips including your butt.

Our first-fit promise

New to our underwear revolution? No worries. Try on two sizes of our style to see which one works for you and return the other no questions asked. Just make sure the sticker is still on.

First Fit Promise

Cart

Congratulations! Your order qualifies for free shipping Add more items to qualify for free shipping.
No more products available for purchase