Onishi was born from a simple idea: underwear should make you look and feel sexy—without loud logos or distractions. Most men’s underwear is over-branded, uncomfortable, and designed to promote the brand, not the wearer. We wanted something different.
That’s why Onishi was created—to bring you sleek, minimal underwear that feels like an extension of you. No big logos. No distractions. Just the perfect fit.
At Onishi, we believe underwear should be about you, not the brand. That’s why our pieces are non-branded, timeless, and designed for confidence, comfort, and self-expression—without the unnecessary noise.
Onishi was born from a simple idea: underwear should make you look and feel sexy—without loud logos or distractions. Most men’s underwear is over-branded, uncomfortable, and designed to promote the brand, not the wearer. We wanted something different.
That’s why Onishi was created—to bring you sleek, minimal underwear that feels like an extension of you. No big logos. No distractions. Just the perfect fit.
At Onishi, we believe underwear should be about you, not the brand. That’s why our pieces are non-branded, timeless, and designed for confidence, comfort, and self-expression—without the unnecessary noise.
Two-Tone Swim Brief (Limited Edition)
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Onishi Two-Tone Swim Brief – Bold, Confident, Ready for Anything.
Designed for those who own the moment, the Onishi Swim Brief brings together sleek design, premium craftsmanship, and bold energy—whether you're diving into the ocean or lounging poolside.
Made from high-end recycled Italian fabric, this piece is built to move, last, and turn heads. Inspired by our beloved Brief, it delivers the same signature fit and comfort, now in a water-ready, sun-loving version.
- Crafted from premium Italian recycled nylon – 78% Recycled Nylon & 22% Lycra ® Xtra Life™
- Black recycled polyester lining – 95% Recycled Polyester & 5% Spandex
- Low-rise, streamlined silhouette – modern, sexy, and effortless
- Elastic waistband with interior drawstring – secure, adjustable, and ready for movement
- Made in Bali, Indonesia
20% off when you buy 3+ (same style only)
Add 3 or more of the same style and you’ll automatically save 20% at checkout.
No code needed. Feel free to mix and match colors and sizes, as long as they’re the same style.
It’s our way of saying thanks for stocking up on your favorites.