- S: Chest 44” x Length 24”
- M: Chest 46” x Length 25”
- L: Chest 48” x Length 26”
- XL: Chest 50” x Length 27”
- S: Chest 44” x Length 24”
- M: Chest 46” x Length 25”
- L: Chest 48” x Length 26”
- XL: Chest 50” x Length 27”
Made from 100% cotton lace, the Poolside Shirt is naturally breathable, lightweight, and comfortable against the skin.
The open lace construction encourages airflow to help keep you cool on warm days, while the opaque weave provides coverage without feeling heavy. Finished with genuine coconut shell buttons, every detail is designed to feel relaxed, natural, and timeless.
Naturally breathable, lightweight, and soft enough to wear all day.
Made from 100% cotton lace, the Poolside Shirt is naturally breathable, lightweight, and comfortable against the skin.
The open lace construction encourages airflow to help keep you cool on warm days, while the opaque weave provides coverage without feeling heavy. Finished with genuine coconut shell buttons, every detail is designed to feel relaxed, natural, and timeless.
Naturally breathable, lightweight, and soft enough to wear all day.
- Machine wash cold with like colors
- Do not bleach
- Lay flat to dry for best results
- Tumble dry low if needed
- Cool iron if needed
- Machine wash cold with like colors
- Do not bleach
- Lay flat to dry for best results
- Tumble dry low if needed
- Cool iron if needed
- Breathable cotton lace keeps you cool on warm days
- Regular fit that's true to size
- Slightly cropped length for an easy, modern silhouette
- Natural coconut shell buttons add timeless character
- Lightweight enough to wear from poolside to dinner
- Designed to pair perfectly with Onishi Swim Briefs
- Breathable cotton lace keeps you cool on warm days
- Regular fit that's true to size
- Slightly cropped length for an easy, modern silhouette
- Natural coconut shell buttons add timeless character
- Lightweight enough to wear from poolside to dinner
- Designed to pair perfectly with Onishi Swim Briefs
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.
Poolside Shirt
Poolside Shirt – Summer Looks Better Relaxed.
Lightweight, breathable, and effortlessly easy to wear, the Poolside Shirt is made for everything summer has to offer. From mornings by the water to sunset drinks with friends, it's the shirt you'll keep reaching for.
Crafted from 100% cotton lace with natural coconut shell buttons, it offers a breathable feel while maintaining just the right amount of structure. The regular fit with a slightly cropped silhouette creates a relaxed, modern shape that looks put together without trying too hard.
Throw it over your favorite Onishi Swim Brief after a swim, pair it with shorts for the beach, or wear it open for warm summer evenings. However you wear it, the Poolside Shirt is designed to make getting dressed feel effortless.
- Lightweight 100% cotton lace
- Breathable and naturally comfortable
- Regular fit with a slightly cropped silhouette
- Resort collar for a relaxed summer look
- Real coconut shell buttons
- Available in three colors: Lapis, Wood, and Natural
- 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.