Shirtless man standing in front of a white background wearing a pair of Jack Adams Natural Fit Modal Trunk in driftwood (profile view)
Shirtless man standing in front of a white background wearing a pair of Jack Adams Natural Fit Modal Trunk in driftwood (back view)
Shirtless man standing in front of a white background wearing a pair of Jack Adams Natural Fit Modal Trunk in teal (profile view)

Natural Fit Modal Trunk

Regular price$35.00
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Built for the male form, the Modal Natural Fit Trunk delivers a contoured, supportive pouch, a clean no‑binding leg, and a sculpted seat that enhances your natural shape. This is engineered comfort with a modern, confident silhouette.

Style & Fit

Underwear- Trunk

Fit — Contoured Pouch + Sculpted Seat

The Natural Fit pouch is ergonomically designed to follow your anatomy for a better, more supportive contour. It lifts without squeezing, shapes without compression, and stays put through every move. The trunk cut features no leg binding, giving you a smooth, unrestricted line that never digs in. In the back, the fit is clean, rounded, and naturally defining—a subtle sculpt that frames the glutes and delivers a confident, tailored look under your clothes.

Fabric — Butter‑Soft TENCEL™ Modal

Made from premium TENCEL™ Modal, this fabric is buttery soft, breathable, and incredibly smooth against the skin. Lightweight, moisture‑wicking, and cool to the touch, it offers a second‑skin feel that stays comfortable from morning to night. It's the kind of softness that becomes your daily go‑to.

Function — Everyday Performance

The Modal Natural Fit Trunk is built for movement and all‑day wear. The contour pouch provides reliable support, the waistband stays flat and flexible, and the Modal fabric keeps you cool and dry. With its no‑binding leg and sculpted seat, it maintains its shape, resists ride‑up, and delivers a clean, modern profile.

A trunk that fits like it was engineered just for you—soft, supportive, and confidently contoured.

SIZE - True to size
  • Fabric: 95% Modal, 5% Elastane.
  • Care: Machine wash on cold water. Air Dry and do not use bleach.



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Discreet packaging: plain poly bag or brown box.

-Shipping Details

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Jack Adams™ underwear and shorts/pants sizing is measured at the waist. To find your correct waist size, measure your torso about one inch below the belly button. To find your size in all of our tops and hoodies, measure your chest around, at approximately one inch below your arm pit. 

Size Chart - INCHES

SIZES (inches) S M L XL XXL 
CHEST 35-37 38-40 41-43 44-47 N/A
NECK 14-14.5 15-15.5 16-16.5 17-17.5 N/A
WAIST 27-29 30-32 33-35 36-38 38-43

 Size Chart - METRIC

SIZES (cm) S M L XL XXL 
CHEST 89-94 97-101 104-109 112-118 N/A
NECK 36-37 38-39 41-42 43-44 N/A
WAIST 69-73 76-81 84-89 91-97 97-109

 

 

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