Engineered in Japan for the dynamic female form

Engineered in Japan for the dynamic female form

Where high-performance function meets the delicate aesthetics of Japanese design. We craft the ultimate active underwear for the modern woman who refuses to compromise on comfort or style.

View Our Products

What We Do

At Core Mind Grid Tech, we have dedicated ourselves to solving the eternal dilemma of women who lead active lives: finding apparel that offers absolute support without sacrificing an ounce of femininity. We understand that the wrong workout bra can ruin a session, causing distraction and discomfort. That is why our design philosophy focuses on creating the perfect fitness lingerie that moves with you, offering a second-skin feel that you will forget you are even wearing.
We specialize in developing products that harmonize with your body's natural motion. Our collection of gym underwear women trust is crafted from fabrics that wick moisture and breathe effortlessly, ensuring you remain cool and focused from your first warm-up to your final cool-down. Every piece is meticulously designed to become your silent partner in fitness, allowing you to push your boundaries with total confidence in your attire.

Our Collection

The AirFlow Seamless Bra

The pinnacle of breathable comfort. This seamless sports bra features a unique honeycomb mesh pattern for maximum ventilation, ensuring you stay dry and cool even during the most intense cardio sessions.
Price: ¥6,900

Buy Now

High-Impact Motion Control Bra

Engineered for high-impact activities like running and HIIT. This workout bra offers superior bounce control with its reinforced underband and racerback design, providing the ultimate support for dynamic movement.
Price: ¥8,400

Buy Now

Lace Embrace Bralette

Redefining fitness lingerie, this piece combines delicate, stretchy lace with high-performance fabric. It offers light-to-medium support, making it perfect for yoga, Pilates, or low-impact days where style is paramount.
Price: ¥5,800

Buy Now

Core Stability Tank Bra

A versatile piece that functions as both a top and a sports bra. The built-in shelf bra offers core stability and support, making it your go-to for weight training and floor exercises.
Price: ¥7,200

Buy Now

CoolMesh Sports Bra

Featuring targeted cooling zones, this active underwear is designed to regulate your body temperature. The strategic mesh panels ensure you never overheat, allowing you to focus purely on your performance.
Price: ¥6,500

Buy Now

SculptFlex Seamless Set (Top & Shorts)

The ultimate collection for the modern athlete. This set features our advanced seamless sports bra top and matching shorts, providing a full range of motion and a flattering silhouette that sculpts and supports your every move.
Price: ¥12,500

Buy Now

Our Goal

Our primary goal is to redefine the standards of comfort and performance in women's sportswear. We believe that every woman deserves to feel powerful and beautiful in her own skin, especially when she is pushing her physical limits. We aim to strip away the complexity of choosing the right gear by creating intuitive designs that simply work. We want to make the search for the perfect gym underwear women can rely on a thing of the past, offering solutions that are so comfortable they feel like a natural extension of the body.
Furthermore, we strive to build a community of strong, driven women who support each other. By focusing on high-quality materials and ethical production processes here in Japan, we are committed to sustainability and longevity in our products. We are not chasing fast fashion; we are building a legacy of quality. Ultimately, we want to inspire you to find joy in movement, knowing that your athletic lingerie is supporting you every step of the way.

Founder’s Words

Akira Tanaka
When I first conceptualized Core Mind Grid Tech, I was frustrated. I saw my partner and friends struggling to find active underwear that truly supported their active lifestyles without making them feel frumpy or uncomfortable. They were constantly compromising—choosing between support and style, or comfort and durability. I realized there was a gap in the market for a brand that could merge the functional rigor of a high-performance workout bra with the delicate, subtle beauty of Japanese design. I wanted to create a solution that empowered women to feel confident the moment they put it on.
For me, Core Mind Grid Tech is about more than just clothing; it is a philosophy. It is about removing the barriers that prevent women from achieving their best. Whether you are a professional athlete or a beginner, the right athletic lingerie can be transformative. It allows you to focus on your mind-muscle connection and your goals. Every piece we create is a testament to this belief. We are dedicated to you, to your journey, and to ensuring that you always feel supported—in every sense of the word.

Frequently asked questions

We primarily use a high-quality nylon and spandex blend that is moisture-wicking, quick-drying, and provides four-way stretch for maximum comfort. Our seamless sports bra collection uses special micro-fibers for an ultra-soft feel.

We have a detailed size guide on each product page. We recommend measuring your band and bust size. Our workout bra is designed to fit snugly, so if you are between sizes, we suggest sizing up for comfort.

Yes. We offer specific lines designed for high-impact sports that feature reinforced support bands. However, we recommend checking the product description; our fitness lingerie is categorized by impact level (High, Medium, Light).

To maintain the integrity of the fabric and the shape of your athletic lingerie, we recommend washing on a cold, gentle cycle and hanging to dry. Do not use fabric softener or bleach.

Currently, we primarily serve customers within Japan, but we are expanding our shipping capabilities. Please check our shipping policy page for the most up-to-date information on international orders.

Write Us a Message

© Core Mind Grid Tech 2026 - All Rights Reserved