First and foremost,
keep your gut warm

A new type of high-waisted boxer briefs developed for people with sensitive gut.

Perfect for sleep. work, and workouts.

　

Non-constrictive yet
stays in place

It's a new feeling

Made in Japan

Japanese craftsmanship is essential for "Choii Pantsu"

Two-tone bicolor

Comes in 2 colors: "Black Sesame Pudding (Black and Gray)" and "Sakura Mochi (Green and Pink)".

Wear it reversibly as you like.

6 features of "Choii Pantsu"

  • 01. Thin and Light

    Because it's thin, you can enjoy fashion without worrying about looking bulky. It also folds up nicely, making it perfect for traveling.

  • 02. Non-constrictive

    360° stretch to match your body movements.
    Relax without feeling any tightness.

  • 03. Excellent elasticity

    Stretches 360° vertically, 2.5 times horizontally, and fits your body without being constricting. Perfect for sleep, work, and workouts.

  • 04. Completely Seamless

    Using a Japanese special knitting technology, we have succeeded in eliminating a waistband, stitching, and seams. Enjoy the feel of soft texture. Snug fit making it easier to retain your body heat and gently warm the stomach.

  • 05. Reversible

    It would be fun if the underwear could be worn inside out! We followed our excitement and decided to make them reversible. They also dry quickly.

  • 06. Made in Japan

    This is a carefully crafted made in Japan, finally developed after 3 years of trial and error. It is made with great attention to detail, using Japanese special knitting technology.

LUNDATTE

Protects your gut health.
Those three years of development were full of ups and downs.

The road to development

Because we want you to feel comfortable 365 days a year

High-waisted offers new options for men's underwear.

Just by wearing "Choii Pantsu" can protect your gut in the easiest way in the world.

Great for sleeping, working, and working out.

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