Quick answer
Choose the ZERO TECH Trunk if you prioritize a barely-there, ultra-breathable feel for all-day wear. Pick the Prime Modal Trunk if you want a luxuriously soft, moisture-wicking fabric that molds to your body.
Why fabric choice matters for trunks
The fabric of your trunk determines how it feels against your skin, how well it breathes, and how it holds up through the day. Two popular options — tech fabric and modal — offer very different experiences. This comparison focuses on the ZERO TECH Trunk and the Prime Modal Trunk to help you decide which material matches your lifestyle.
The trade-off: barely-there vs. soft support
The ZERO TECH Trunk uses an ultra-light, breathable fabric that feels like nothing on your skin. It’s designed for zero bulk and a second-skin fit, making it ideal for hot days or active wear. The Prime Modal Trunk, on the other hand, uses luxe modal that is incredibly soft to the touch and wicks away moisture. It molds perfectly to your body, offering a more substantial feel without being heavy. The trade-off is straightforward: tech fabric prioritizes airiness and invisibility, while modal prioritizes plush comfort and moisture management.
Key trade-offs between ZERO TECH and Prime Modal trunks
- Breathability: ZERO TECH Trunk uses ultra-light, breathable fabric for maximum airflow. Prime Modal Trunk wicks moisture but has a denser weave.
- Feel on skin: ZERO TECH feels like a second skin with zero bulk. Prime Modal is luxuriously soft and molds to your body.
- Bulk and visibility: ZERO TECH is designed for zero bulk, ideal under slim-fit clothing. Prime Modal offers a more substantial, supportive feel. If you need invisible underwear under dress pants or shorts, the ZERO TECH Trunk is the clear winner.
- Moisture management: Prime Modal wicks away moisture actively. ZERO TECH relies on breathability to keep you dry. For sweaty days or workouts, the Prime Modal Trunk's moisture-wicking may be more effective.
Product facts at a glance
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ZERO TECH Trunk: Made with ultra-light, breathable fabric and a silk-crafted crotch, this second-skin design gives you all-day comfort with zero bulk. You get a barely-there feel that reduces visible lines and keeps you cool, especially in warm conditions.
ZERO TECH Trunk
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Prime Modal Trunk: Made from ultra-soft modal that's amazing to the touch and wicks away moisture. The stitching allows for a better fit and keeps them from rolling up easily or bunching. The modal fabric provides a luxurious, smooth feel against skin while actively managing sweat, and the anti-roll stitching keeps your trunk in place.
Prime Modal Trunk
Which trunk is right for you?
Best for
- Men who want a barely-there, breathable trunk for all-day wear under fitted clothing (ZERO TECH Trunk)
- Men who prioritize ultra-soft fabric and moisture-wicking for comfort during active days (Prime Modal Trunk)
Not for
- If you prefer a substantial, plush fabric feel, the ZERO TECH Trunk may feel too minimal.
- If you need the absolute lowest bulk under tight pants, the Prime Modal Trunk may show slightly more.
