Trunk Size Chart

Fit Profile: True to Size

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

100

AllDay Trunk

100

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

Color
Maroon Red
Black
Gray
Army Green
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Size
Size Guide

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AllDay Trunk

SIGNATURE 40° SIDE-FLY • ANTI-ODOR • EXTREMELY SOFT • 95% Modal • 5% Spandex



"Lightweight, comfortable, and breathable. The ALLDAY collection is a must have."




  • AllDay-Comfort and Performance.


      • BYLT Soft-Blend

    95% Modal means it's soft for the boys, breathable, and extra supportive. Strategically placed spandex keeps everything in the right place all day.

      • Signature Fly-40°

    Our 40° side-fly makes access easier and allows for a quick draw. We've changed men's trunks for the better, check the reviews yourself.

      • No bunching. No messing-around.

    Our premium waistband sits comfortably and leaves zero marks. The AllDay collection doesn't ride or bunch up, leaving you comfortable all day.




    Men's Premium AllDay Trunks by BYLT Basics



Customer Reviews

4.8 Based on 100 reviews
5 Star
86% 
86
4 Star
13% 
13
3 Star
1% 
1
2 Star
0% 
0
1 Star
0% 
0
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07/10/2019

Comfort

Chris T.

Great comfort great fit great style. Don't hesitate to buy

07/10/2019

Perfect

Mitch

Everything about these, are amazing!

07/09/2019

Fantastic!

Jason

Absolutely love everything this company puts out! New favorite boxers.

Jason  verified customer review of AllDay Trunk
06/27/2019

Great underwear

Brandon R.

Great underwear nice fit and the feel is very high quality.

06/26/2019

I Felt *****

Ryan Q.

Trunks were light, soft like “butter”, and as if you had nothing on. Very comfortable and firm fitting in all the right places.

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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

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.