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Men's Underwear

Find your everyday fit: relaxed 100% cotton boxer shorts, or 96% cotton/4% Lycra trunks and long boxer briefs with extra stretch.

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16 products

Acacia Men’s Cotton-Lycra Long Boxer – Black
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Acacia Men’s Cotton-Lycra Long Boxer – Dark Navy
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Acacia Men’s Cotton-Lycra Long Boxer – Graphite Grey
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Acacia Men’s Cotton-Lycra Long Boxer – Royal Blue
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Acacia Men’s 96% Cotton, 4% Lycra Trunks – Black
Front view of Acacia men’s grey trunks with short legs, a wide, darker waistband, navy logos, and matching front stitching.
Front view of Acacia men’s petrol blue trunks with short legs, a wide waistband, golden beige logos, and matching seams.
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Front view of Acacia men’s dark navy trunks with short legs, a wide waistband, light-colored logos, and matching stitching.
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Acacia Men’s 100% Cotton Boxer Shorts – White
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Sold outAcacia Men’s 100% Cotton Boxer Shorts – Royal Blue
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Acacia Men’s 100% Cotton Boxer Shorts – Navy
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Acacia Men’s 100% Cotton Boxer Shorts – Charcoal Grey
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Sold outAcacia Men’s 100% Cotton Boxer Shorts – Olive
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Acacia Men’s 100% Cotton Boxer Shorts – Dark Brown
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Acacia Men’s 100% Cotton Boxer Shorts – Grey
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Acacia Men’s 100% Cotton Boxer Shorts – Black
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Acacia men’s 100% cotton tank and short-sleeve undershirts in white, black, grey, navy and dark brown.

Men's Underwear

Choose the cut that works for you

Your underwear is the first thing you put on, so start with the fit you prefer. Choose men’s boxer shorts for a relaxed shape, short-leg trunks for a closer fit, or long boxer briefs when you want more coverage along your thighs.

Acacia’s boxer shorts in this collection are made from 100% cotton. Our fitted trunks and long boxer briefs combine 96% cotton with 4% Lycra for added stretch. Compare the cuts and fabrics, then choose what feels right for your day.

Explore colors including white, black, navy, royal blue, grey, dark brown, olive and petrol blue. Colors, sizes and availability vary by style, so check the individual product page before ordering. Want several pairs? Browse our men’s offers. On packs marked “random colors,” you cannot choose the colors, and shades may repeat.