< BIOS Shorts + Pairings

Flex Trunks

$ 625.00

Black
Black
Black
Black
Black
1/1

Flex Trunks

$ 625.00

Our Flex Trunk Underwear style has been completely upgraded! Designed to be performance ready, the custom flex-knit fabric blend offers complete support, breathability and cool touch mesh for optimal temperature control.Learn More

Style
Trunks Boxer Briefs
ColorBlack
Steel
Storm
Dark-Olive
Dark-Charcoal
Navy
Black
Size Size Guide
Trunk Size Chart

Fit Profile: True to Size

Size: S M L XL 2XL 3XL
Waist: 28-30" 31-33" 34-36" 37-39" 40-42"
43-46"
Leg Opening: 26" 15" 15.5" 16.5" 17.5" 18.5"
Outseam: 9.25" 9.75" 10.25" 10.75" 11.25" 11.75"

  *Standard Trunk Size Guide Measurements:

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

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

*Product measurements can vary by 1/2" 

Care Instructions: Machine wash cold with like colors. Tumble dry low. Do not iron.

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.

 

Bundle & Save 3-Pack

STYLE WITH

Color:
Size:Unselected
Select a size