tomboyx | Premium Underwear for All Day Comfort. Fit for You.

4.5" Trunks

4.5" Trunks - Main image
$21.3 $34 In stock

Category: underwear

You’ve never seen a trunk like this - the first and the best gender-neutral classic just for you. Somewhere between a short and a brief, our 4.5” trunks are everything you need. Made with supersoft cotton blend that gives just a hint of stretch and makes sure you stay comfy, while our signature stay-put waistband keeps it together without pinching or riding up.

Oopsie: we made this batch a bit small– we recommend sizing up one from your usual size.

Can’t find your size? Check out our full assortment of perfect undies here.

  • Mid rise fit, 4.5” inseam
  • Signature stay-put silky soft waistband
  • Smooth, durable flatlock seams won’t irritate or chafe
  • 95% cotton, 5% spandex
  • OEKO-TEX® certified
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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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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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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 (4.8 / 5 · 5 reviews)

Owen ★★★★★

I sized up because I wasn't sure about the 4.5" length, but it hits right at mid-thigh without riding up. The supersoft fabric has just enough stretch that they don't feel like they're squeezing anywhere.

Benjamin ★★★★★

The waistband doesn’t dig in at all, even after a full day of wear, and the fabric keeps its shape without riding up. I’ve basically been living in these since they arrived—that 4.5” length is the sweet spot for me.

Scarlett Z. ★★★★★

Finally, a cut that sits right between boxers and briefs without riding up or feeling too loose. The 4.5” length is perfect for everyday wear, and the gender-neutral fit means it actually works for my body type.