Trunk Size Chart

Fit Profile: True to Size

Trunk Size Chart
Size: S M L XL XXL
Waist: 28-30" 31-34" 35-39" 40-43" 43-46"
Outseam: 6-7" 7-8" 8-10" 10-11" 11.5"

  *Standard Trunk Size Guide Measurements:

Waist: Circumference measurement of waist. Trunks are designed to fit above the hips.

OutseamMeasure the length from the intersection of the waistband & hip to the bottom hem, follow the outer seam.

*Product measurements can vary by 1/2" 

Your purchase includes our "Love Your Fit" guarantee

If you don't love the fit, send it back and we'll exchange the size so you're happy.

 

AllDay Trunk

128 reviews

AllDay Trunk

128 reviews

Formatted for moisture control, ease of movement, and a secure fit for all-day comfort. Learn More

Color
Grey
Green
Black
Maroon
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Size Guide

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AllDay Trunk ">
Description
Details
AllDay Trunk ">

Our All-Day Trunks command freedom. It's time to say 'goodbye' to uncomfortable bunching, pinching, riding up, overheating, and stop letting 'adjustment' hold you back during a long day no matter where you were.

The AllDay Trunk
Modal 95% MODAL
Spandex 5% SPANDEX
AllDay Trunk
Lightweight LIGHTWEIGHT
ANTI-ODOR
The BYLT Difference
Style, performance & comfort are our design principles that we use in creating our entire line.
Our Guarantee
It is critical to us that you are happy with your purchase and that you love the items you receive. We know things happen, if you are not 100% satisfied, we will try our hardest to make it right.
Experience Premium
We're here to upgrade your basics. Every BYLT product is rigorously tested before it's shown to the world to ensure it is nothing less than premium.
Customer Reviews
4.9 Based on 128 reviews
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04/24/2020

Soft comfortable all day trunks

Davis N.

These trunks are incredible. Soft, comfy, supportive and they stay in place and don’t ride up. Definitely my go to.

04/08/2020

Perfect Length, even better Fabric

Cory

This fabric is incredibly soft, but I really like the length. Doesn’t ride up like other brands. Definitely me new go to boxers.

03/26/2020

AMAZING

Jilyn

I bought almost every color of these as a gift for my Hubby and he LOVES it! However, I really wish they didn’t sold out so quick!

03/20/2020

Awesome Workout Briefs

Josh B.

I have used these extensively during intense CrossFit workouts, and around the house. They have held up very well, and are light, comfortable, and quick drying.

03/13/2020

Only brand of underwear I wear anymore...

Zetron C.

Soft, comfortable, stretchy. Can wear at home, work, gym, etc. Love it!

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Our Signature Fabrics

BYLT Blend™ Fabric

Premium signature blend of Cotton, Polyester, and Spandex. Perfect for your essential everyday shirt, leaving you with that flawless BYLT Fit.

LUX Blend™ Fabric

High-quality performance blend of Cotton, Polyester, and Spandex. Reactive fabric allows for slight reduction in length to provide the perfect structured fit.

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Trunk Size Chart

Fit Profile: True to Size

Trunk Size Chart
Size: S M L XL XXL
Waist: 28-30" 31-34" 35-39" 40-43" 43-46"
Outseam: 6-7" 7-8" 8-10" 10-11" 11.5"

  *Standard Trunk Size Guide Measurements:

Waist: Circumference measurement of waist. Trunks are designed to fit above the hips.

OutseamMeasure the length from the intersection of the waistband & hip to the bottom hem, follow the outer seam.

*Product measurements can vary by 1/2" 

Your purchase includes our "Love Your Fit" guarantee

If you don't love the fit, send it back and we'll exchange the size so you're happy.