How does the 18-Hour Jersey brief fit compared to other briefs?

The 18-Hour Jersey has a lower waistband and fits true to size. Because these briefs are mainly cotton, they can shrink slightly with a traditional laundering cycle, so size up if in-between sizes.

What makes the 18-Hour Jersey so soft?

The 18-Hour Jersey is made from a premium jersey fabric designed to feel almost non-existent against your skin while maintaining durability and structure.

Is the 18-Hour Jersey brief good for everyday wear?

Yes, it's designed specifically for everyday wear, whether you're at work, at home, or traveling. The soft fabric and supportive elastic waistband keep you comfortable from morning through night.

Does the 18-Hour Jersey brief have enough support in the pouch?

The brief provides solid support with its structured jersey fabric and strong elastic, though some customers prefer a bit more give in the pouch area depending on fit preference.

How do I care for the 18-Hour Jersey brief?

Machine wash cold and tumble dry low to maintain the softness and fit of your briefs. Avoid fabric softener to preserve the fabric's performance.

Mack Weldon 18-Hour Jersey Brief

IN CM

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Micro-Brushed French terry

So you get an ultra-soft feel (that doesn’t fade in the wash).

image of man wearing navy blue sweatpants

Streamlined Fit

So you can wear them anywhere.

close up of the waist band of ACE sweatpant

Perfect Stretch + Recovery

So they’re always comfortable, but never saggy.

close up of ribbed cuff on the ankle of ACE navy blue sweatpant

Back-Ribbed Ankle Cuffs

So they maintain their shape at the hem.

18-Hour Jersey

Our signature blend of cotton, modal, and stretch, tailor-made for exceptionally comfortable underwear and undershirts.

Shop All 18-Hour

Shop All 18-Hour