At KIJN (pronounced kin), we believe what you wear should do more than just fit it should feel right. That belief lives in everything we create.

We’re built on three core values:

Connection. Care. Comfort.
Connection to your body, your community, and how you move through life.
Care in every stitch, silhouette, and thoughtful design detail.
Comfort that goes beyond the physical emotional, empowering, and effortless.

Every piece we make is designed with you in mind. Whether you’re working out, winding down, or doing everything in between, KIJN supports your lifestyle with style.

But KIJN is more than activewear it’s a sisterhood.

Founded by sisters Michelle and Kelsey, KIJN was born from real experiences. Michelle, living with Endometriosis and PCOS, struggled to find activewear that truly fit and felt good. Everything she tried was restrictive and unsupportive. Kelsey, who grew up feeling “different,” knew the impact of not seeing herself represented. Together, they shared a vision: activewear that supports your body and your confidence just as you are.

In 2024, KIJN launched as the UK and Northern Ireland’s first sister-led, size-inclusive activewear brand created by women, for everyBODY.

From day one, inclusivity has been our foundation. We don’t follow trends we start movements. Movements that make space for real women, real bodies, and real stories. Our campaigns feature real people, not industry ideals, so when you see KIJN, we want you to see yourself.

One of our proudest milestones? Launching a collection that includes sizes up to XXXL and we’re just getting started. We’re constantly evolving our range, perfecting fit, and designing performance pieces that support all bodies, including those living with invisible illnesses like PCOS and Endometriosis.

KIJN is comfort. KIJN is confidence. KIJN is connection.

We’re building more than a brand we’re building a global community of women lifting each other up.

Welcome to KIJN. Athleisure made with you in mind, for everyBODY.