Flex Trunk Custom 3 Pack

135 Reviews

Flex Trunk Custom 3 Pack

135 Reviews

Designed with increased compression, breathability, and support for your more intense days.

Step 1: Pick your size

Size
Size Guide

Step 2: Select 3 Colors

Color # 1
Maroon Red
Black
Gray
Green
Color:
Color # 2
Maroon Red
Black
Gray
Green
Color:
Color # 3
Maroon Red
Black
Gray
Green
Color:

Customer Reviews

4.8 Based on 135 reviews
5 Star
83% 
112
4 Star
15% 
20
3 Star
1% 
2
2 Star
0% 
0
1 Star
1% 
1
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04/11/2017

Flex Boxer Briefs Live up to Hype

Dale H.

Excellent compression fit on legs but because I'm on the line for size I'd order up one size next time. Additional colors would be great!

01/07/2020

Great

Christopher J.

Perfect fit ! Comfort & feel is amazing. It’s a must purchase

12/13/2019

Best

Ashley F.

This is not a first time purchase of these boxers. They are my husbands absolute favorite and he only likes to wear these over any other brand he’s tried.

11/19/2019

Boxer Brief

Gary W.

Love them buying more.

10/22/2019

Flex Boxer Brief

Daniel L.

Keeps your package secure, with fantastic stretch and breathability for your hardest workouts.

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.