Bamboo Rib 4.5" Trunks

$19.52 ~~$32~~ In stock

Redesigned for a better fit and even better feel, the Bamboo Rib 4.5" Trunks deliver breathable support with a body-hugging fit and silky-soft texture. The new rib construction stretches and recovers like a dream, and the smooth waistband stays put without pinching. Consider these your new go-to trunks—comfort, style, and sustainability in one.

4.5" inseam
OEKO-TEX® certified
45% Recycled Polyester, 42% Bamboo, 13% Elastane
Lining: 93% Bamboo Viscose, 7% Spandex
Lightweight but not see-through
Breathable, moisture-wicking, and odor-resistant
Inclusive sizing from XS–6X

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

David ★★★★★ Sep 10, 2026

Wore these through a 12-hour travel day and forgot I had them on. The 4.5" inseam sits right where it should, no riding up, and the silky texture holds up wash after wash.

Riley ★★★★★ Sep 8, 2026

I've worn a lot of trunks that claim to be soft, but this ribbed fabric genuinely feels silky against my skin all day. The stretch and recovery are spot-on too, so they hold their shape without ever feeling like they're squeezing me.

Nicholas ★★★★★ Sep 7, 2026

The ribbed fabric is so much silkier than my old cotton pairs, and it hugs without squeezing anywhere. I've worn them through a full workday and they stay put without riding up, which is exactly what I needed.