LUNDATTEは、大切な人を思う気持ちから始まり、腸いいパンツは幾多の困難を越えて生まれました。
縫い目も、ウエストゴムも削ぎ落とし、残したのは「芯を守る」という思想。
身につけた瞬間に感じるのは、安心感と、内側から整う感覚。
それは、思考も動きも、そしてパフォーマンスまでも支えます。
私たちがつくりたいのは、身体の芯を守るという 価値観を、世界の新しいスタンダードにすること。
腸いいパンツは、未来へ挑むあなたを内側から支えます。

Protect Your Core. Unlock Your Power.
Protect your core. Keep moving, keep thinking.
The world’s first seamless, high-waisted boxer briefs.*
*Design patent granted.
Choii Boxers – The High-Waisted Revolution.
Improved fit from the first edition.
One pair. Endless benefits.
A single pair that naturally supports you—from sleep to active moments.
360° Stretch — Moves with you in every direction.
No Pressure, No Slip — Stays in place, all day long.
All-Season Comfort — Ultra-thin, never bulky, from summer to winter.
Reversible Design — Two colors, one pair.
Slip them on and protect your core in the simplest way possible.
Stay comfortable even in summer air-conditioning—thin yet reliable, season after season.
51% Nylon / 43% Polyester / 6% Polyurethane
MADE IN JAPAN
We recommend washing in a laundry net.
Designed to retain your body’s natural warmth—
not by generating heat, but by balancing breathability and insulation.
Comfort that lasts through every season, from daily life to special moments.
Crafted in Japan, one by one, by skilled artisans.
- M size: Waist up to 86 cm (up to 34 in)
A versatile, standard fit that works well for most body types.
- L size: Waist 91–97 cm (36–38 in)
Ideal for broader builds or those who prefer a little extra room.
- XL size: Waist 102–107 cm (40–42 in)
Perfect for larger frames or a more relaxed fit.